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Toán · Lớp 5

Bài tập Toán lớp 5 Phép cộng phân số khác mẫu số có đáp án

4 câu · 10 phút · Ngân hàng đề TopStudy. Đáp án và lời giải do TopStudy biên soạn, mở ngay dưới từng câu.

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Nội dung đề

Phần I. Tự luận

Câu 1

1 điểm
12+13=\frac{1}{2} + \frac{1}{3} =...25+34=\frac{2}{5} + \frac{3}{4} =...16+29=\frac{1}{6} + \frac{2}{9} =....38+14=\frac{3}{8} + \frac{1}{4} =...
512+718=\frac{5}{{12}} + \frac{7}{{18}} =...23+45=\frac{2}{3} + \frac{4}{5} =...110+325=\frac{1}{{10}} + \frac{3}{{25}} =...47+514=\frac{4}{7} + \frac{5}{{14}} =...
316+524=\frac{3}{{16}} + \frac{5}{{24}} =...715+29=\frac{7}{{15}} + \frac{2}{9} =...15+37=\frac{1}{5} + \frac{3}{7} =...23+18=\frac{2}{3} + \frac{1}{8} =...
49+112=\frac{4}{9} + \frac{1}{{12}} =...310+27=\frac{3}{{10}} + \frac{2}{7} =...56+14=\frac{5}{6} + \frac{1}{4} =...17+211=\frac{1}{7} + \frac{2}{{11}} =...
34+59=\frac{3}{4} + \frac{5}{9} =...25+413=\frac{2}{5} + \frac{4}{{13}} =...13+58=\frac{1}{3} + \frac{5}{8} =...710+15=\frac{7}{{10}} + \frac{1}{5} =...
27+314=\frac{2}{7} + \frac{3}{{14}} =...411+29=\frac{4}{{11}} + \frac{2}{9} =35+115=\frac{3}{5} + \frac{1}{{15}} =...512+110=\frac{5}{{12}} + \frac{1}{{10}} =...
213+35=\frac{2}{{13}} + \frac{3}{5} =...19+415=\frac{1}{9} + \frac{4}{{15}} =...67+221=\frac{6}{7} + \frac{2}{{21}} =...38+116=\frac{3}{8} + \frac{1}{{16}} =...
45+320=\frac{4}{5} + \frac{3}{{20}} =...16+47=\frac{1}{6} + \frac{4}{7} =...511+233=\frac{5}{{11}} + \frac{2}{{33}} =...313+126=\frac{3}{{13}} + \frac{1}{{26}} =...
29+512=\frac{2}{9} + \frac{5}{{12}} =...114+37=\frac{1}{{14}} + \frac{3}{7} =...415+125=\frac{4}{{15}} + \frac{1}{{25}} =...23+712=\frac{2}{3} + \frac{7}{{12}} =...
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12+13=36+26=56\begin{array}{l}\frac{1}{2} + \frac{1}{3} = \frac{3}{6} + \frac{2}{6}\\ = \frac{5}{6}\end{array}25+34=820+1520=2320\begin{array}{l}\frac{2}{5} + \frac{3}{4} = \frac{8}{{20}} + \frac{{15}}{{20}}\\ = \frac{{23}}{{20}}\end{array}16+29=318+418=718\begin{array}{l}\frac{1}{6} + \frac{2}{9} = \frac{3}{{18}} + \frac{4}{{18}}\\ = \frac{7}{{18}}\end{array}38+14=38+28=58\begin{array}{l}\frac{3}{8} + \frac{1}{4} = \frac{3}{8} + \frac{2}{8}\\ = \frac{5}{8}\end{array}
512+718=1536+1436=2936\begin{array}{l}\frac{5}{{12}} + \frac{7}{{18}} = \frac{{15}}{{36}} + \frac{{14}}{{36}}\\ = \frac{{29}}{{36}}\end{array}23+45=1015+1215=2215\begin{array}{l}\frac{2}{3} + \frac{4}{5} = \frac{{10}}{{15}} + \frac{{12}}{{15}}\\ = \frac{{22}}{{15}}\end{array}110+325=550+650=1150\begin{array}{l}\frac{1}{{10}} + \frac{3}{{25}} = \frac{5}{{50}} + \frac{6}{{50}}\\ = \frac{{11}}{{50}}\end{array}47+514=814+514=1314\begin{array}{l}\frac{4}{7} + \frac{5}{{14}} = \frac{8}{{14}} + \frac{5}{{14}}\\ = \frac{{13}}{{14}}\end{array}
316+524=948+1048=1948\begin{array}{l}\frac{3}{{16}} + \frac{5}{{24}} = \frac{9}{{48}} + \frac{{10}}{{48}}\\ = \frac{{19}}{{48}}\end{array}715+29=2145+1045=3145\begin{array}{l}\frac{7}{{15}} + \frac{2}{9} = \frac{{21}}{{45}} + \frac{{10}}{{45}}\\ = \frac{{31}}{{45}}\end{array}15+37=735+1535=2235\begin{array}{l}\frac{1}{5} + \frac{3}{7} = \frac{7}{{35}} + \frac{{15}}{{35}}\\ = \frac{{22}}{{35}}\end{array}23+18=1624+324=1924\begin{array}{l}\frac{2}{3} + \frac{1}{8} = \frac{{16}}{{24}} + \frac{3}{{24}}\\ = \frac{{19}}{{24}}\end{array}
49+112=1636+336=1936\begin{array}{l}\frac{4}{9} + \frac{1}{{12}} = \frac{{16}}{{36}} + \frac{3}{{36}}\\ = \frac{{19}}{{36}}\end{array}310+27=2170+2070=4170\begin{array}{l}\frac{3}{{10}} + \frac{2}{7} = \frac{{21}}{{70}} + \frac{{20}}{{70}}\\ = \frac{{41}}{{70}}\end{array}56+14=1012+312=1312\begin{array}{l}\frac{5}{6} + \frac{1}{4} = \frac{{10}}{{12}} + \frac{3}{{12}}\\ = \frac{{13}}{{12}}\end{array}17+211=1177+1477=2577\begin{array}{l}\frac{1}{7} + \frac{2}{{11}} = \frac{{11}}{{77}} + \frac{{14}}{{77}}\\ = \frac{{25}}{{77}}\end{array}
34+59=2736+2036=4736\begin{array}{l}\frac{3}{4} + \frac{5}{9} = \frac{{27}}{{36}} + \frac{{20}}{{36}}\\ = \frac{{47}}{{36}}\end{array}25+413=2665+2065=4665\begin{array}{l}\frac{2}{5} + \frac{4}{{13}} = \frac{{26}}{{65}} + \frac{{20}}{{65}}\\ = \frac{{46}}{{65}}\end{array}13+58=824+1524=2324\begin{array}{l}\frac{1}{3} + \frac{5}{8} = \frac{8}{{24}} + \frac{{15}}{{24}}\\ = \frac{{23}}{{24}}\end{array}710+15=710+210=910\begin{array}{l}\frac{7}{{10}} + \frac{1}{5} = \frac{7}{{10}} + \frac{2}{{10}}\\ = \frac{9}{{10}}\end{array}
27+314=414+314=714=12\begin{array}{l}\frac{2}{7} + \frac{3}{{14}} = \frac{4}{{14}} + \frac{3}{{14}}\\ = \frac{7}{{14}} = \frac{1}{2}\end{array}411+29=3699+2299=5899\begin{array}{l}\frac{4}{{11}} + \frac{2}{9} = \frac{{36}}{{99}} + \frac{{22}}{{99}}\\ = \frac{{58}}{{99}}\end{array}35+115=915+115=1015=23\begin{array}{l}\frac{3}{5} + \frac{1}{{15}} = \frac{9}{{15}} + \frac{1}{{15}}\\ = \frac{{10}}{{15}} = \frac{2}{3}\end{array}512+110=2560+660=3160\begin{array}{l}\frac{5}{{12}} + \frac{1}{{10}} = \frac{{25}}{{60}} + \frac{6}{{60}}\\ = \frac{{31}}{{60}}\end{array}
213+35=1065+3965=4965\begin{array}{l}\frac{2}{{13}} + \frac{3}{5} = \frac{{10}}{{65}} + \frac{{39}}{{65}}\\ = \frac{{49}}{{65}}\end{array}19+415=545+1245=1745\begin{array}{l}\frac{1}{9} + \frac{4}{{15}} = \frac{5}{{45}} + \frac{{12}}{{45}}\\ = \frac{{17}}{{45}}\end{array}67+221=1821+221=2021\begin{array}{l}\frac{6}{7} + \frac{2}{{21}} = \frac{{18}}{{21}} + \frac{2}{{21}}\\ = \frac{{20}}{{21}}\end{array}38+116=616+116=716\begin{array}{l}\frac{3}{8} + \frac{1}{{16}} = \frac{6}{{16}} + \frac{1}{{16}}\\ = \frac{7}{{16}}\end{array}
45+320=1620+320=1920\begin{array}{l}\frac{4}{5} + \frac{3}{{20}} = \frac{{16}}{{20}} + \frac{3}{{20}}\\ = \frac{{19}}{{20}}\end{array}16+47=742+2442=3142\begin{array}{l}\frac{1}{6} + \frac{4}{7} = \frac{7}{{42}} + \frac{{24}}{{42}}\\ = \frac{{31}}{{42}}\end{array}511+233=1533+233=1733\begin{array}{l}\frac{5}{{11}} + \frac{2}{{33}} = \frac{{15}}{{33}} + \frac{2}{{33}}\\ = \frac{{17}}{{33}}\end{array}313+126=626+126=726\begin{array}{l}\frac{3}{{13}} + \frac{1}{{26}} = \frac{6}{{26}} + \frac{1}{{26}}\\ = \frac{7}{{26}}\end{array}
29+512=836+1536=2336\begin{array}{l}\frac{2}{9} + \frac{5}{{12}} = \frac{8}{{36}} + \frac{{15}}{{36}}\\ = \frac{{23}}{{36}}\end{array}114+37=114+614=714=12\begin{array}{l}\frac{1}{{14}} + \frac{3}{7} = \frac{1}{{14}} + \frac{6}{{14}}\\ = \frac{7}{{14}} = \frac{1}{2}\end{array}415+125=2075+375=2375\begin{array}{l}\frac{4}{{15}} + \frac{1}{{25}} = \frac{{20}}{{75}} + \frac{3}{{75}}\\ = \frac{{23}}{{75}}\end{array}23+712=812+712=1512=54\begin{array}{l}\frac{2}{3} + \frac{7}{{12}} = \frac{8}{{12}} + \frac{7}{{12}}\\ = \frac{{15}}{{12}} = \frac{5}{4}\end{array}

Câu 2

1 điểm
13+27=\frac{1}{3} + \frac{2}{7} =...35+111=\frac{3}{5} + \frac{1}{{11}} =...29+14=\frac{2}{9} + \frac{1}{4} =...47+38=\frac{4}{7} + \frac{3}{8} =...
110+23=\frac{1}{{10}} + \frac{2}{3} =...56+113=\frac{5}{6} + \frac{1}{{13}} =...25+317=\frac{2}{5} + \frac{3}{{17}} =...112+45=\frac{1}{{12}} + \frac{4}{5} =...
311+29=\frac{3}{{11}} + \frac{2}{9} =...14+57=\frac{1}{4} + \frac{5}{7} =213+16=\frac{2}{{13}} + \frac{1}{6} =49+15=\frac{4}{9} + \frac{1}{5} =
310+211=\frac{3}{{10}} + \frac{2}{{11}} =...17+34=\frac{1}{7} + \frac{3}{4} =...58+23=\frac{5}{8} + \frac{2}{3} =...19+411=\frac{1}{9} + \frac{4}{{11}} =...
25+112=\frac{2}{5} + \frac{1}{{12}} =...37+110=\frac{3}{7} + \frac{1}{{10}} =...413+25=\frac{4}{{13}} + \frac{2}{5} =...16+38=\frac{1}{6} + \frac{3}{8} =...
23+114=\frac{2}{3} + \frac{1}{{14}} =...59+27=\frac{5}{9} + \frac{2}{7} =...15+313=\frac{1}{5} + \frac{3}{{13}} =...411+13=\frac{4}{{11}} + \frac{1}{3} =...
27+35=\frac{2}{7} + \frac{3}{5} =...18+29=\frac{1}{8} + \frac{2}{9} =...34+113=\frac{3}{4} + \frac{1}{{13}} =...512+25=\frac{5}{{12}} + \frac{2}{5} =...
111+37=\frac{1}{{11}} + \frac{3}{7} =...23+49=\frac{2}{3} + \frac{4}{9} =...15+219=\frac{1}{5} + \frac{2}{{19}} =...38+17=\frac{3}{8} + \frac{1}{7} =...
45+19=\frac{4}{5} + \frac{1}{9} =...211+310=\frac{2}{{11}} + \frac{3}{{10}} =...14+213=\frac{1}{4} + \frac{2}{{13}} =...57+311=\frac{5}{7} + \frac{3}{{11}} =...
29+18=\frac{2}{9} + \frac{1}{8} =...35+17=\frac{3}{5} + \frac{1}{7} =...413+13=\frac{4}{{13}} + \frac{1}{3} =...16+25=\frac{1}{6} + \frac{2}{5} =...
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13+27=721+621=1321\begin{array}{l}\frac{1}{3} + \frac{2}{7} = \frac{7}{{21}} + \frac{6}{{21}}\\ = \frac{{13}}{{21}}\end{array}35+111=3355+555=3855\begin{array}{l}\frac{3}{5} + \frac{1}{{11}} = \frac{{33}}{{55}} + \frac{5}{{55}}\\ = \frac{{38}}{{55}}\end{array}29+14=836+936=1736\begin{array}{l}\frac{2}{9} + \frac{1}{4} = \frac{8}{{36}} + \frac{9}{{36}}\\ = \frac{{17}}{{36}}\end{array}47+38=3236+2136=5336\begin{array}{l}\frac{4}{7} + \frac{3}{8} = \frac{{32}}{{36}} + \frac{{21}}{{36}}\\ = \frac{{53}}{{36}}\end{array}
110+23=330+2030=2330\begin{array}{l}\frac{1}{{10}} + \frac{2}{3} = \frac{3}{{30}} + \frac{{20}}{{30}}\\ = \frac{{23}}{{30}}\end{array}56+113=6578+678=7178\begin{array}{l}\frac{5}{6} + \frac{1}{{13}} = \frac{{65}}{{78}} + \frac{6}{{78}}\\ = \frac{{71}}{{78}}\end{array}25+317=3485+1585=4985\begin{array}{l}\frac{2}{5} + \frac{3}{{17}} = \frac{{34}}{{85}} + \frac{{15}}{{85}}\\ = \frac{{49}}{{85}}\end{array}112+45=560+4860=5360\begin{array}{l}\frac{1}{{12}} + \frac{4}{5} = \frac{5}{{60}} + \frac{{48}}{{60}}\\ = \frac{{53}}{{60}}\end{array}
311+29=2799+2299=4999\begin{array}{l}\frac{3}{{11}} + \frac{2}{9} = \frac{{27}}{{99}} + \frac{{22}}{{99}}\\ = \frac{{49}}{{99}}\end{array}14+57=728+2028=2728\begin{array}{l}\frac{1}{4} + \frac{5}{7} = \frac{7}{{28}} + \frac{{20}}{{28}}\\ = \frac{{27}}{{28}}\end{array}213+16=1278+1378=2578\begin{array}{l}\frac{2}{{13}} + \frac{1}{6} = \frac{{12}}{{78}} + \frac{{13}}{{78}}\\ = \frac{{25}}{{78}}\end{array}49+15=2045+945=2945\begin{array}{l}\frac{4}{9} + \frac{1}{5} = \frac{{20}}{{45}} + \frac{9}{{45}}\\ = \frac{{29}}{{45}}\end{array}
310+211=33110+20110=53110\begin{array}{l}\frac{3}{{10}} + \frac{2}{{11}} = \frac{{33}}{{110}} + \frac{{20}}{{110}}\\ = \frac{{53}}{{110}}\end{array}17+34=428+2128=2528\begin{array}{l}\frac{1}{7} + \frac{3}{4} = \frac{4}{{28}} + \frac{{21}}{{28}}\\ = \frac{{25}}{{28}}\end{array}58+23=1524+1624=3124\begin{array}{l}\frac{5}{8} + \frac{2}{3} = \frac{{15}}{{24}} + \frac{{16}}{{24}}\\ = \frac{{31}}{{24}}\end{array}19+411=1199+3699=4799\begin{array}{l}\frac{1}{9} + \frac{4}{{11}} = \frac{{11}}{{99}} + \frac{{36}}{{99}}\\ = \frac{{47}}{{99}}\end{array}
25+112=2460+560=2960\begin{array}{l}\frac{2}{5} + \frac{1}{{12}} = \frac{{24}}{{60}} + \frac{5}{{60}}\\ = \frac{{29}}{{60}}\end{array}37+110=3070+770=3770\begin{array}{l}\frac{3}{7} + \frac{1}{{10}} = \frac{{30}}{{70}} + \frac{7}{{70}}\\ = \frac{{37}}{{70}}\end{array}413+25=2065+2665=4665\begin{array}{l}\frac{4}{{13}} + \frac{2}{5} = \frac{{20}}{{65}} + \frac{{26}}{{65}}\\ = \frac{{46}}{{65}}\end{array}16+38=424+924=1324\begin{array}{l}\frac{1}{6} + \frac{3}{8} = \frac{4}{{24}} + \frac{9}{{24}}\\ = \frac{{13}}{{24}}\end{array}
23+114=2842+342=3142\begin{array}{l}\frac{2}{3} + \frac{1}{{14}} = \frac{{28}}{{42}} + \frac{3}{{42}}\\ = \frac{{31}}{{42}}\end{array}59+27=3563+1863=5363\begin{array}{l}\frac{5}{9} + \frac{2}{7} = \frac{{35}}{{63}} + \frac{{18}}{{63}}\\ = \frac{{53}}{{63}}\end{array}15+313=1365+1565=2865\begin{array}{l}\frac{1}{5} + \frac{3}{{13}} = \frac{{13}}{{65}} + \frac{{15}}{{65}}\\ = \frac{{28}}{{65}}\end{array}411+13=1233+1133=2333\begin{array}{l}\frac{4}{{11}} + \frac{1}{3} = \frac{{12}}{{33}} + \frac{{11}}{{33}}\\ = \frac{{23}}{{33}}\end{array}
27+35=1035+2135=3135\begin{array}{l}\frac{2}{7} + \frac{3}{5} = \frac{{10}}{{35}} + \frac{{21}}{{35}}\\ = \frac{{31}}{{35}}\end{array}18+29=972+1672=2572\begin{array}{l}\frac{1}{8} + \frac{2}{9} = \frac{9}{{72}} + \frac{{16}}{{72}}\\ = \frac{{25}}{{72}}\end{array}34+113=3952+452=4352\begin{array}{l}\frac{3}{4} + \frac{1}{{13}} = \frac{{39}}{{52}} + \frac{4}{{52}}\\ = \frac{{43}}{{52}}\end{array}512+25=2560+2460=4960\begin{array}{l}\frac{5}{{12}} + \frac{2}{5} = \frac{{25}}{{60}} + \frac{{24}}{{60}}\\ = \frac{{49}}{{60}}\end{array}
111+37=777+3377=4077\begin{array}{l}\frac{1}{{11}} + \frac{3}{7} = \frac{7}{{77}} + \frac{{33}}{{77}}\\ = \frac{{40}}{{77}}\end{array}23+49=69+49=109\begin{array}{l}\frac{2}{3} + \frac{4}{9} = \frac{6}{9} + \frac{4}{9}\\ = \frac{{10}}{9}\end{array}15+219=1995+1095=2995\begin{array}{l}\frac{1}{5} + \frac{2}{{19}} = \frac{{19}}{{95}} + \frac{{10}}{{95}}\\ = \frac{{29}}{{95}}\end{array}38+17=2156+856=2956\begin{array}{l}\frac{3}{8} + \frac{1}{7} = \frac{{21}}{{56}} + \frac{8}{{56}}\\ = \frac{{29}}{{56}}\end{array}
45+19=3645+545=4145\begin{array}{l}\frac{4}{5} + \frac{1}{9} = \frac{{36}}{{45}} + \frac{5}{{45}}\\ = \frac{{41}}{{45}}\end{array}211+310=20110+33110=53110\begin{array}{l}\frac{2}{{11}} + \frac{3}{{10}} = \frac{{20}}{{110}} + \frac{{33}}{{110}}\\ = \frac{{53}}{{110}}\end{array}14+213=1352+852=2152\begin{array}{l}\frac{1}{4} + \frac{2}{{13}} = \frac{{13}}{{52}} + \frac{8}{{52}}\\ = \frac{{21}}{{52}}\end{array}57+311=5577+2177=7677\begin{array}{l}\frac{5}{7} + \frac{3}{{11}} = \frac{{55}}{{77}} + \frac{{21}}{{77}}\\ = \frac{{76}}{{77}}\end{array}
29+18=1672+972=2572\begin{array}{l}\frac{2}{9} + \frac{1}{8} = \frac{{16}}{{72}} + \frac{9}{{72}}\\ = \frac{{25}}{{72}}\end{array}35+17=2135+535=2635\begin{array}{l}\frac{3}{5} + \frac{1}{7} = \frac{{21}}{{35}} + \frac{5}{{35}}\\ = \frac{{26}}{{35}}\end{array}413+13=1239+1339=2539\begin{array}{l}\frac{4}{{13}} + \frac{1}{3} = \frac{{12}}{{39}} + \frac{{13}}{{39}}\\ = \frac{{25}}{{39}}\end{array}16+25=530+1230=1730\begin{array}{l}\frac{1}{6} + \frac{2}{5} = \frac{5}{{30}} + \frac{{12}}{{30}}\\ = \frac{{17}}{{30}}\end{array}

Câu 3

1 điểm
217+13=\frac{2}{{17}} + \frac{1}{3} = ...116+35=\frac{1}{{16}} + \frac{3}{5} =...514+29=\frac{5}{{14}} + \frac{2}{9} =...319+47=\frac{3}{{19}} + \frac{4}{7} =...
15+611=\frac{1}{5} + \frac{6}{{11}} =...415+18=\frac{4}{{15}} + \frac{1}{8} =...23+516=\frac{2}{3} + \frac{5}{{16}} =...37+213=\frac{3}{7} + \frac{2}{{13}} =...
19+417=\frac{1}{9} + \frac{4}{{17}} =...512+310=\frac{5}{{12}} + \frac{3}{{10}} =...211+56=\frac{2}{{11}} + \frac{5}{6} =...14+715=\frac{1}{4} + \frac{7}{{15}} =...
38+419=\frac{3}{8} + \frac{4}{{19}} =...67+112=\frac{6}{7} + \frac{1}{{12}} =...25+314=\frac{2}{5} + \frac{3}{{14}} =...113+59=\frac{1}{{13}} + \frac{5}{9} =...
411+215=\frac{4}{{11}} + \frac{2}{{15}} =...35+116=\frac{3}{5} + \frac{1}{{16}} =...27+413=\frac{2}{7} + \frac{4}{{13}} =...13+617=\frac{1}{3} + \frac{6}{{17}} =...
58+311=\frac{5}{8} + \frac{3}{{11}} =...29+45=\frac{2}{9} + \frac{4}{5} =...17+512=\frac{1}{7} + \frac{5}{{12}} =310+213=\frac{3}{{10}} + \frac{2}{{13}} =...
49+114=\frac{4}{9} + \frac{1}{{14}} =...23+57=\frac{2}{3} + \frac{5}{7} =...15+38=\frac{1}{5} + \frac{3}{8} =...413+211=\frac{4}{{13}} + \frac{2}{{11}} =...
37+19=\frac{3}{7} + \frac{1}{9} =...516+25=\frac{5}{{16}} + \frac{2}{5} =...111+415=\frac{1}{{11}} + \frac{4}{{15}} =...217+34=\frac{2}{{17}} + \frac{3}{4} =...
59+110=\frac{5}{9} + \frac{1}{{10}} =...318+26=\frac{3}{{18}} + \frac{2}{6} =...13+411=\frac{1}{3} + \frac{4}{{11}} =...25+513=\frac{2}{5} + \frac{5}{{13}} =...
38+112=\frac{3}{8} + \frac{1}{{12}} =...47+29=\frac{4}{7} + \frac{2}{9} =...115+37=\frac{1}{{15}} + \frac{3}{7} =...511+23=\frac{5}{{11}} + \frac{2}{3} =...
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217+13=651+1751=2351\begin{array}{l}\frac{2}{{17}} + \frac{1}{3} = \frac{6}{{51}} + \frac{{17}}{{51}}\\ = \frac{{23}}{{51}}\end{array}116+35=580+4880=5380\begin{array}{l}\frac{1}{{16}} + \frac{3}{5} = \frac{5}{{80}} + \frac{{48}}{{80}}\\ = \frac{{53}}{{80}}\end{array}514+29=45126+28126=73126\begin{array}{l}\frac{5}{{14}} + \frac{2}{9} = \frac{{45}}{{126}} + \frac{{28}}{{126}}\\ = \frac{{73}}{{126}}\end{array}319+47=21133+76133=97133\begin{array}{l}\frac{3}{{19}} + \frac{4}{7} = \frac{{21}}{{133}} + \frac{{76}}{{133}}\\ = \frac{{97}}{{133}}\end{array}
15+611=1155+3055=4155\begin{array}{l}\frac{1}{5} + \frac{6}{{11}} = \frac{{11}}{{55}} + \frac{{30}}{{55}}\\ = \frac{{41}}{{55}}\end{array}415+18=32120+15120=47120\begin{array}{l}\frac{4}{{15}} + \frac{1}{8} = \frac{{32}}{{120}} + \frac{{15}}{{120}}\\ = \frac{{47}}{{120}}\end{array}23+516=3248+1548=4748\begin{array}{l}\frac{2}{3} + \frac{5}{{16}} = \frac{{32}}{{48}} + \frac{{15}}{{48}}\\ = \frac{{47}}{{48}}\end{array}37+213=3991+1491=5391\begin{array}{l}\frac{3}{7} + \frac{2}{{13}} = \frac{{39}}{{91}} + \frac{{14}}{{91}}\\ = \frac{{53}}{{91}}\end{array}
19+417=17153+36153=53153\begin{array}{l}\frac{1}{9} + \frac{4}{{17}} = \frac{{17}}{{153}} + \frac{{36}}{{153}}\\ = \frac{{53}}{{153}}\end{array}512+310=2560+1860=4360\begin{array}{l}\frac{5}{{12}} + \frac{3}{{10}} = \frac{{25}}{{60}} + \frac{{18}}{{60}}\\ = \frac{{43}}{{60}}\end{array}211+56=1266+5566=6766\begin{array}{l}\frac{2}{{11}} + \frac{5}{6} = \frac{{12}}{{66}} + \frac{{55}}{{66}}\\ = \frac{{67}}{{66}}\end{array}14+715=1560+2860=4360\begin{array}{l}\frac{1}{4} + \frac{7}{{15}} = \frac{{15}}{{60}} + \frac{{28}}{{60}}\\ = \frac{{43}}{{60}}\end{array}
38+419=57152+32152=89152\begin{array}{l}\frac{3}{8} + \frac{4}{{19}} = \frac{{57}}{{152}} + \frac{{32}}{{152}}\\ = \frac{{89}}{{152}}\end{array}67+112=7284+784=7984\begin{array}{l}\frac{6}{7} + \frac{1}{{12}} = \frac{{72}}{{84}} + \frac{7}{{84}}\\ = \frac{{79}}{{84}}\end{array}25+314=2870+1570=4370\begin{array}{l}\frac{2}{5} + \frac{3}{{14}} = \frac{{28}}{{70}} + \frac{{15}}{{70}}\\ = \frac{{43}}{{70}}\end{array}113+59=9117+65117=74117\begin{array}{l}\frac{1}{{13}} + \frac{5}{9} = \frac{9}{{117}} + \frac{{65}}{{117}}\\ = \frac{{74}}{{117}}\end{array}
411+215=60165+22165=82165\begin{array}{l}\frac{4}{{11}} + \frac{2}{{15}} = \frac{{60}}{{165}} + \frac{{22}}{{165}}\\ = \frac{{82}}{{165}}\end{array}35+116=4880+580=5380\begin{array}{l}\frac{3}{5} + \frac{1}{{16}} = \frac{{48}}{{80}} + \frac{5}{{80}}\\ = \frac{{53}}{{80}}\end{array}27+413=2691+2891=5491\begin{array}{l}\frac{2}{7} + \frac{4}{{13}} = \frac{{26}}{{91}} + \frac{{28}}{{91}}\\ = \frac{{54}}{{91}}\end{array}13+617=1751+1851=3551\begin{array}{l}\frac{1}{3} + \frac{6}{{17}} = \frac{{17}}{{51}} + \frac{{18}}{{51}}\\ = \frac{{35}}{{51}}\end{array}
58+311=5588+2488=7988\begin{array}{l}\frac{5}{8} + \frac{3}{{11}} = \frac{{55}}{{88}} + \frac{{24}}{{88}}\\ = \frac{{79}}{{88}}\end{array}29+45=1045+3645=4645\begin{array}{l}\frac{2}{9} + \frac{4}{5} = \frac{{10}}{{45}} + \frac{{36}}{{45}}\\ = \frac{{46}}{{45}}\end{array}17+512=1284+3584=4784\begin{array}{l}\frac{1}{7} + \frac{5}{{12}} = \frac{{12}}{{84}} + \frac{{35}}{{84}}\\ = \frac{{47}}{{84}}\end{array}310+213=39130+20130=59130\begin{array}{l}\frac{3}{{10}} + \frac{2}{{13}} = \frac{{39}}{{130}} + \frac{{20}}{{130}}\\ = \frac{{59}}{{130}}\end{array}
49+114=56126+9126=65126\begin{array}{l}\frac{4}{9} + \frac{1}{{14}} = \frac{{56}}{{126}} + \frac{9}{{126}}\\ = \frac{{65}}{{126}}\end{array}23+57=1421+1521=2921\begin{array}{l}\frac{2}{3} + \frac{5}{7} = \frac{{14}}{{21}} + \frac{{15}}{{21}}\\ = \frac{{29}}{{21}}\end{array}15+38=840+1540=2340\begin{array}{l}\frac{1}{5} + \frac{3}{8} = \frac{8}{{40}} + \frac{{15}}{{40}}\\ = \frac{{23}}{{40}}\end{array}413+211=44143+26143=70143\begin{array}{l}\frac{4}{{13}} + \frac{2}{{11}} = \frac{{44}}{{143}} + \frac{{26}}{{143}}\\ = \frac{{70}}{{143}}\end{array}
37+19=2763+763=3463\begin{array}{l}\frac{3}{7} + \frac{1}{9} = \frac{{27}}{{63}} + \frac{7}{{63}}\\ = \frac{{34}}{{63}}\end{array}516+25=2580+3280=5780\begin{array}{l}\frac{5}{{16}} + \frac{2}{5} = \frac{{25}}{{80}} + \frac{{32}}{{80}}\\ = \frac{{57}}{{80}}\end{array}111+415=15165+44165=59165\begin{array}{l}\frac{1}{{11}} + \frac{4}{{15}} = \frac{{15}}{{165}} + \frac{{44}}{{165}}\\ = \frac{{59}}{{165}}\end{array}217+34=868+5168=5968\begin{array}{l}\frac{2}{{17}} + \frac{3}{4} = \frac{8}{{68}} + \frac{{51}}{{68}}\\ = \frac{{59}}{{68}}\end{array}
59+110=5090+990=5990\begin{array}{l}\frac{5}{9} + \frac{1}{{10}} = \frac{{50}}{{90}} + \frac{9}{{90}}\\ = \frac{{59}}{{90}}\end{array}318+26=318+618=918=12\begin{array}{l}\frac{3}{{18}} + \frac{2}{6} = \frac{3}{{18}} + \frac{6}{{18}}\\ = \frac{9}{{18}} = \frac{1}{2}\end{array}13+411=1133+1233=2333\begin{array}{l}\frac{1}{3} + \frac{4}{{11}} = \frac{{11}}{{33}} + \frac{{12}}{{33}}\\ = \frac{{23}}{{33}}\end{array}25+513=2665+2565=5165\begin{array}{l}\frac{2}{5} + \frac{5}{{13}} = \frac{{26}}{{65}} + \frac{{25}}{{65}}\\ = \frac{{51}}{{65}}\end{array}
38+112=924+224=1124\begin{array}{l}\frac{3}{8} + \frac{1}{{12}} = \frac{9}{{24}} + \frac{2}{{24}}\\ = \frac{{11}}{{24}}\end{array}47+29=3663+1463=5063\begin{array}{l}\frac{4}{7} + \frac{2}{9} = \frac{{36}}{{63}} + \frac{{14}}{{63}}\\ = \frac{{50}}{{63}}\end{array}115+37=7105+45105=52105\begin{array}{l}\frac{1}{{15}} + \frac{3}{7} = \frac{7}{{105}} + \frac{{45}}{{105}}\\ = \frac{{52}}{{105}}\end{array}511+23=1533+2233=3733\begin{array}{l}\frac{5}{{11}} + \frac{2}{3} = \frac{{15}}{{33}} + \frac{{22}}{{33}}\\ = \frac{{37}}{{33}}\end{array}

Câu 4

1 điểm
47+120=\frac{4}{7} + \frac{1}{{20}} =...211+518=\frac{2}{{11}} + \frac{5}{{18}} =...513+38=\frac{5}{{13}} + \frac{3}{8} =...16+419=\frac{1}{6} + \frac{4}{{19}} =...
49+320=\frac{4}{9} + \frac{3}{{20}} =...27+512=\frac{2}{7} + \frac{5}{{12}} =...14+611=\frac{1}{4} + \frac{6}{{11}} =...313+45=\frac{3}{{13}} + \frac{4}{5} =...
217+59=\frac{2}{{17}} + \frac{5}{9} =...13+516=\frac{1}{3} + \frac{5}{{16}} =...411+37=\frac{4}{{11}} + \frac{3}{7} =...25+421=\frac{2}{5} + \frac{4}{{21}} =...
57+317=\frac{5}{7} + \frac{3}{{17}} =...18+619=\frac{1}{8} + \frac{6}{{19}} =...35+413=\frac{3}{5} + \frac{4}{{13}} =...29+511=\frac{2}{9} + \frac{5}{{11}} =...
112+47=\frac{1}{{12}} + \frac{4}{7} =...310+514=\frac{3}{{10}} + \frac{5}{{14}} =...23+613=\frac{2}{3} + \frac{6}{{13}} =...15+716=\frac{1}{5} + \frac{7}{{16}} =...
49+217=\frac{4}{9} + \frac{2}{{17}} =...311+58=\frac{3}{{11}} + \frac{5}{8} =...213+67=\frac{2}{{13}} + \frac{6}{7} =...14+517=\frac{1}{4} + \frac{5}{{17}} =...
37+415=\frac{3}{7} + \frac{4}{{15}} =...59+211=\frac{5}{9} + \frac{2}{{11}} =...13+720=\frac{1}{3} + \frac{7}{{20}} =...45+319=\frac{4}{5} + \frac{3}{{19}} =...
27+617=\frac{2}{7} + \frac{6}{{17}} =...18+49=\frac{1}{8} + \frac{4}{9} =...313+57=\frac{3}{{13}} + \frac{5}{7} =...25+718=\frac{2}{5} + \frac{7}{{18}} =...
111+613=\frac{1}{{11}} + \frac{6}{{13}} =...38+215=\frac{3}{8} + \frac{2}{{15}} =...56+317=\frac{5}{6} + \frac{3}{{17}} =...29+411=\frac{2}{9} + \frac{4}{{11}} =...
15+619=\frac{1}{5} + \frac{6}{{19}} =...37+513=\frac{3}{7} + \frac{5}{{13}} =...23+716=\frac{2}{3} + \frac{7}{{16}} =...14+59=\frac{1}{4} + \frac{5}{9} =...
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Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

47+120=80140+7140=87140\begin{array}{l}\frac{4}{7} + \frac{1}{{20}} = \frac{{80}}{{140}} + \frac{7}{{140}}\\ = \frac{{87}}{{140}}\end{array}211+518=36198+55198=91198\begin{array}{l}\frac{2}{{11}} + \frac{5}{{18}} = \frac{{36}}{{198}} + \frac{{55}}{{198}}\\ = \frac{{91}}{{198}}\end{array}513+38=40104+39104=79104\begin{array}{l}\frac{5}{{13}} + \frac{3}{8} = \frac{{40}}{{104}} + \frac{{39}}{{104}}\\ = \frac{{79}}{{104}}\end{array}16+419=19114+24114=43114\begin{array}{l}\frac{1}{6} + \frac{4}{{19}} = \frac{{19}}{{114}} + \frac{{24}}{{114}}\\ = \frac{{43}}{{114}}\end{array}
317+25=1585+3485=4985\begin{array}{l}\frac{3}{{17}} + \frac{2}{5} = \frac{{15}}{{85}} + \frac{{34}}{{85}}\\ = \frac{{49}}{{85}}\end{array}35+233=69115+10115=79115\begin{array}{l}\frac{3}{5} + \frac{2}{{33}} = \frac{{69}}{{115}} + \frac{{10}}{{115}}\\ = \frac{{79}}{{115}}\end{array}19+514=14126+45126=59126\begin{array}{l}\frac{1}{9} + \frac{5}{{14}} = \frac{{14}}{{126}} + \frac{{45}}{{126}}\\ = \frac{{59}}{{126}}\end{array}415+311=44165+45165=89165\begin{array}{l}\frac{4}{{15}} + \frac{3}{{11}} = \frac{{44}}{{165}} + \frac{{45}}{{165}}\\ = \frac{{89}}{{165}}\end{array}
23+417=3451+1251=4651\begin{array}{l}\frac{2}{3} + \frac{4}{{17}} = \frac{{34}}{{51}} + \frac{{12}}{{51}}\\ = \frac{{46}}{{51}}\end{array}58+17=3556+856=4356\begin{array}{l}\frac{5}{8} + \frac{1}{7} = \frac{{35}}{{56}} + \frac{8}{{56}}\\ = \frac{{43}}{{56}}\end{array}310+219=57190+20190=77190\begin{array}{l}\frac{3}{{10}} + \frac{2}{{19}} = \frac{{57}}{{190}} + \frac{{20}}{{190}}\\ = \frac{{77}}{{190}}\end{array}15+613=1365+3065=4365\begin{array}{l}\frac{1}{5} + \frac{6}{{13}} = \frac{{13}}{{65}} + \frac{{30}}{{65}}\\ = \frac{{43}}{{65}}\end{array}
49+320=80180+27180=107180\begin{array}{l}\frac{4}{9} + \frac{3}{{20}} = \frac{{80}}{{180}} + \frac{{27}}{{180}}\\ = \frac{{107}}{{180}}\end{array}27+512=2484+3584=5984\begin{array}{l}\frac{2}{7} + \frac{5}{{12}} = \frac{{24}}{{84}} + \frac{{35}}{{84}}\\ = \frac{{59}}{{84}}\end{array}14+611=1144+2444=3544\begin{array}{l}\frac{1}{4} + \frac{6}{{11}} = \frac{{11}}{{44}} + \frac{{24}}{{44}}\\ = \frac{{35}}{{44}}\end{array}313+45=1565+5265=6765\begin{array}{l}\frac{3}{{13}} + \frac{4}{5} = \frac{{15}}{{65}} + \frac{{52}}{{65}}\\ = \frac{{67}}{{65}}\end{array}
217+59=18153+85153=103153\begin{array}{l}\frac{2}{{17}} + \frac{5}{9} = \frac{{18}}{{153}} + \frac{{85}}{{153}}\\ = \frac{{103}}{{153}}\end{array}13+516=1648+1548=3148\begin{array}{l}\frac{1}{3} + \frac{5}{{16}} = \frac{{16}}{{48}} + \frac{{15}}{{48}}\\ = \frac{{31}}{{48}}\end{array}411+37=2877+3377=6177\begin{array}{l}\frac{4}{{11}} + \frac{3}{7} = \frac{{28}}{{77}} + \frac{{33}}{{77}}\\ = \frac{{61}}{{77}}\end{array}25+421=42105+20105=62105\begin{array}{l}\frac{2}{5} + \frac{4}{{21}} = \frac{{42}}{{105}} + \frac{{20}}{{105}}\\ = \frac{{62}}{{105}}\end{array}
57+317=85119+21119=106119\begin{array}{l}\frac{5}{7} + \frac{3}{{17}} = \frac{{85}}{{119}} + \frac{{21}}{{119}}\\ = \frac{{106}}{{119}}\end{array}18+619=19152+48152=67152\begin{array}{l}\frac{1}{8} + \frac{6}{{19}} = \frac{{19}}{{152}} + \frac{{48}}{{152}}\\ = \frac{{67}}{{152}}\end{array}35+413=3965+2065=5965\begin{array}{l}\frac{3}{5} + \frac{4}{{13}} = \frac{{39}}{{65}} + \frac{{20}}{{65}}\\ = \frac{{59}}{{65}}\end{array}29+511=2299+4599=6799\begin{array}{l}\frac{2}{9} + \frac{5}{{11}} = \frac{{22}}{{99}} + \frac{{45}}{{99}}\\ = \frac{{67}}{{99}}\end{array}
112+47=784+4884=5584\begin{array}{l}\frac{1}{{12}} + \frac{4}{7} = \frac{7}{{84}} + \frac{{48}}{{84}}\\ = \frac{{55}}{{84}}\end{array}310+514=2170+2570=4670=2335\begin{array}{l}\frac{3}{{10}} + \frac{5}{{14}} = \frac{{21}}{{70}} + \frac{{25}}{{70}}\\ = \frac{{46}}{{70}} = \frac{{23}}{{35}}\end{array}23+613=2639+1839=4439\begin{array}{l}\frac{2}{3} + \frac{6}{{13}} = \frac{{26}}{{39}} + \frac{{18}}{{39}}\\ = \frac{{44}}{{39}}\end{array}15+716=1680+3580=5180\begin{array}{l}\frac{1}{5} + \frac{7}{{16}} = \frac{{16}}{{80}} + \frac{{35}}{{80}}\\ = \frac{{51}}{{80}}\end{array}
49+217=68153+18153=86153\begin{array}{l}\frac{4}{9} + \frac{2}{{17}} = \frac{{68}}{{153}} + \frac{{18}}{{153}}\\ = \frac{{86}}{{153}}\end{array}311+58=2488+5588=7988\begin{array}{l}\frac{3}{{11}} + \frac{5}{8} = \frac{{24}}{{88}} + \frac{{55}}{{88}}\\ = \frac{{79}}{{88}}\end{array}213+67=1491+7891=9291\begin{array}{l}\frac{2}{{13}} + \frac{6}{7} = \frac{{14}}{{91}} + \frac{{78}}{{91}}\\ = \frac{{92}}{{91}}\end{array}14+517=1768+2068=3768\begin{array}{l}\frac{1}{4} + \frac{5}{{17}} = \frac{{17}}{{68}} + \frac{{20}}{{68}}\\ = \frac{{37}}{{68}}\end{array}
37+415=45105+28105=73105\begin{array}{l}\frac{3}{7} + \frac{4}{{15}} = \frac{{45}}{{105}} + \frac{{28}}{{105}}\\ = \frac{{73}}{{105}}\end{array}59+211=5599+1899=7399\begin{array}{l}\frac{5}{9} + \frac{2}{{11}} = \frac{{55}}{{99}} + \frac{{18}}{{99}}\\ = \frac{{73}}{{99}}\end{array}13+720=2060+2160=4160\begin{array}{l}\frac{1}{3} + \frac{7}{{20}} = \frac{{20}}{{60}} + \frac{{21}}{{60}}\\ = \frac{{41}}{{60}}\end{array}45+319=7695+1595=9195\begin{array}{l}\frac{4}{5} + \frac{3}{{19}} = \frac{{76}}{{95}} + \frac{{15}}{{95}}\\ = \frac{{91}}{{95}}\end{array}
27+617=34119+42119=76119\begin{array}{l}\frac{2}{7} + \frac{6}{{17}} = \frac{{34}}{{119}} + \frac{{42}}{{119}}\\ = \frac{{76}}{{119}}\end{array}18+49=972+3272=4172\begin{array}{l}\frac{1}{8} + \frac{4}{9} = \frac{9}{{72}} + \frac{{32}}{{72}}\\ = \frac{{41}}{{72}}\end{array}313+57=2191+6591=8691\begin{array}{l}\frac{3}{{13}} + \frac{5}{7} = \frac{{21}}{{91}} + \frac{{65}}{{91}}\\ = \frac{{86}}{{91}}\end{array}25+718=3690+3590=7190\begin{array}{l}\frac{2}{5} + \frac{7}{{18}} = \frac{{36}}{{90}} + \frac{{35}}{{90}}\\ = \frac{{71}}{{90}}\end{array}
111+613=13143+66143=79143\begin{array}{l}\frac{1}{{11}} + \frac{6}{{13}} = \frac{{13}}{{143}} + \frac{{66}}{{143}}\\ = \frac{{79}}{{143}}\end{array}38+215=45120+16120=61120\begin{array}{l}\frac{3}{8} + \frac{2}{{15}} = \frac{{45}}{{120}} + \frac{{16}}{{120}}\\ = \frac{{61}}{{120}}\end{array}56+317=85102+18102=103102\begin{array}{l}\frac{5}{6} + \frac{3}{{17}} = \frac{{85}}{{102}} + \frac{{18}}{{102}}\\ = \frac{{103}}{{102}}\end{array}29+411=2299+3699=5899\begin{array}{l}\frac{2}{9} + \frac{4}{{11}} = \frac{{22}}{{99}} + \frac{{36}}{{99}}\\ = \frac{{58}}{{99}}\end{array}
15+619=1995+3095=4995\begin{array}{l}\frac{1}{5} + \frac{6}{{19}} = \frac{{19}}{{95}} + \frac{{30}}{{95}}\\ = \frac{{49}}{{95}}\end{array}37+513=3991+3591=7491\begin{array}{l}\frac{3}{7} + \frac{5}{{13}} = \frac{{39}}{{91}} + \frac{{35}}{{91}}\\ = \frac{{74}}{{91}}\end{array}23+716=3248+2148=5348\begin{array}{l}\frac{2}{3} + \frac{7}{{16}} = \frac{{32}}{{48}} + \frac{{21}}{{48}}\\ = \frac{{53}}{{48}}\end{array}14+59=936+2036=2936\begin{array}{l}\frac{1}{4} + \frac{5}{9} = \frac{9}{{36}} + \frac{{20}}{{36}}\\ = \frac{{29}}{{36}}\end{array}
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Tất cả đề I. Phép cộng phân số khác mẫu · Các bộ sách Toán Lớp 5