Lời giải Bài tập Toán lớp 5 Phép trừ số thập phân có đáp án

Câu 1

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{45{,}6}\\{12{,}3}\end{array}} \\\,\,\,\,33{,}3\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{123{,}78}\\{\,\,\,\,4{,}56}\end{array}} \\\,\,\,119{,}22\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{7{,}89}\\{\,\,\,2{,}134}\end{array}} \\\,\,\,\,\,\,\,5{,}756\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{234{,}5}\\{\,\,\,89{,}1}\end{array}} \\\,\,\,\,145{,}4\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}7}\\{345{,}2}\end{array}} \\\,\,\,\,\,111{,}5\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{89{,}12}\\{\,\,5{,}67}\end{array}} \\\,\,\,83{,}45\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}9}\\{\,\,\,\,\,\,\,\,1{,}23}\end{array}} \\\,\,\,\,\,344{,}67\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}456}\\{\,6{,}78}\end{array}} \\\,\,\,\,16{,}676\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{167{,}4}\\{\,\,78{,}9}\end{array}} \\\,\,\,\,\,\,88{,}5\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{12{,}34}\\{\,\,\,\,3{,}456}\end{array}} \\\,\,\,\,\,\,\,\,8{,}884\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{234{,}5}\\{\,\,67{,}8}\end{array}} \\\,\,\,\,166{,}7\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{56{,}7}\\{\,\,\,\,\,\,\,4{,}123}\end{array}} \\\,\,\,\,\,\,\,\,52{,}577\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{189{,}2}\\{123{,}4}\end{array}} \\\,\,\,\,\,\,65{,}8\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}1}\\{\,\,\,\,\,\,\,\,\,\,\,\,2{,}345}\end{array}} \\\,\,\,\,\,\,\,\,\,\,342{,}755\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{78{,}9}\\{\,\,\,\,\,5{,}67}\end{array}} \\\,\,\,\,\,\,73{,}23\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{12{,}345}\\{1{,}23}\end{array}} \\\,\,\,\,11{,}115\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{167{,}8}\\{\,\,\,\,\,\,56{,}78}\end{array}} \\\,\,\,\,\,\,\,\,111{,}02\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}2}\\{234{,}5}\end{array}} \\\,\,\,\,221{,}7\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{89{,}34}\\{\,\,\,\,6{,}789}\end{array}} \\\,\,\,\,\,82{,}551\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{123{,}6}\\{\,\,45{,}1}\end{array}} \\\,\,\,\,\,\,78{,}5\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}9}\\{\,\,78{,}9}\end{array}} \\\,\,\,267\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}67}\\{\,2{,}56}\end{array}} \\\,\,\,\,21{,}11\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{5{,}678}\\{1{,}234}\end{array}} \\\,\,\,4{,}444\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{134{,}5}\\{\,\,67{,}8}\end{array}} \\\,\,\,\,\,\,66{,}7\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}1}\\{189{,}2}\end{array}} \\\,\,\,266{,}9\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{\,\,\,\,67{,}89}\\{12{,}3}\end{array}} \\\,\,\,\,\,\,\,\,55{,}59\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{189{,}4}\\{123{,}5}\end{array}} \\\,\,\,\,\,\,65{,}9\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}6}\\{\,\,56{,}7}\end{array}} \\\,\,\,288{,}9\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{\,\,\,7{,}123}\\{2{,}45}\end{array}} \\\,\,\,\,\,\,4{,}673\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}456}\\{\,\,5{,}678}\end{array}} \\\,\,\,\,17{,}778\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{123{,}7}\\{\,45{,}6}\end{array}} \\\,\,\,\,\,\,78{,}1\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}2}\\{\,\,\,\,\,89{,}12}\end{array}} \\\,\,\,\,\,367{,}08\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{12{,}34}\\{\,\,\,\,\,1{,}789}\end{array}} \\\,\,\,\,\,\,10{,}551\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{234{,}9}\\{167{,}4}\end{array}} \\\,\,\,\,\,\,\,67{,}5\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{56{,}78}\\{\,\,3{,}45}\end{array}} \\\,\,\,\,53{,}33\end{array}$
$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{189{,}5}\\{\,\,78{,}9}\end{array}} \\\,\,\,110{,}6\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{5{,}67}\\{\,\,2{,}134}\end{array}} \\\,\,\,\,\,\,3{,}536\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}1}\\{123{,}6}\end{array}} \\\,\,\,221{,}5\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{67{,}89}\\{12{,}34}\end{array}} \\\,\,\,\,55{,}55\end{array}$	$\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}7}\\{234{,}5}\end{array}} \\\,\,\,\,222{,}2\end{array}$

Câu 2

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

78,9 – 34,56 = 44,34 $\begin{array}{l}\underline {-\begin{array}{cccccccccccccccccccc}{\,\,\,\,78{,}9}\\{34{,}56}\end{array}} \\\,\,\,\,44{,}34\end{array}$	23,67 – 7,123 = 16,547 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}67}\\{\,\,\,\,7{,}123}\end{array}} \\\,\,\,\,\,16{,}547\end{array}$	456,1 – 189,4 = 266,7 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}1}\\{189{,}4}\end{array}} \\\,\,\,266{,}7\end{array}$
345,9 – 234,5 = 111,4 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}9}\\{234{,}5}\end{array}} \\\,\,\,\,111{,}4\end{array}$	5,678 – 2,134 = 3,544 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{5{,}678}\\{2{,}134}\end{array}} \\\,\,\,\,3{,}544\end{array}$	134,56 – 67,89 = 66,67 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{134{,}56}\\{\,\,67{,}89}\end{array}} \\\,\,\,\,\,\,66{,}67\end{array}$
189,2 – 89,56 = 99,64 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{189{,}2{\rm{ }}}\\{\,\,\,89{,}56}\end{array}} \\\,\,\,\,\,\,99{,}64\end{array}$	12,34 – 4,123 = 8,217 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{12{,}34}\\{\,\,\,4{,}123}\end{array}} \\\,\,\,\,\,\,8{,}217\end{array}$	67,8 – 23,45 = 44,35 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{67{,}8}\\{\,\,\,23{,}45}\end{array}} \\\,\,\,\,\,\,\,44{,}35\end{array}$
456,7 – 345,6 = 111,1 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}7}\\{345{,}6}\end{array}} \\\,\,\,\,\,111{,}1\end{array}$	23,456 – 5,12 = 18,336 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}456}\\{5{,}12}\end{array}} \\\,\,\,\,18{,}336\end{array}$	345,1 – 167,8 = 177,3 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}1}\\{167{,}8}\end{array}} \\\,\,\,\,177{,}3\end{array}$

Câu 3

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

456,9 – 189,5 = 267,4 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}9}\\{189{,}5}\end{array}} \\\,\,\,267{,}4\end{array}$	12,345 – 6,78 = 5,565 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{12{,}345}\\{6{,}78}\end{array}} \\\,\,\,\,\,\,5{,}565\end{array}$	345,6 – 234,5 = 111,1 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{345{,}6}\\{234{,}5}\end{array}} \\\,\,\,\,\,111{,}1\end{array}$
5,12 – 1,234 = 3,886 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{5{,}12}\\{\,\,\,1{,}234}\end{array}} \\\,\,\,\,\,\,3{,}886\end{array}$	134,2 – 67,8 = 66,4 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{134{,}2}\\{\,\,67{,}8}\end{array}} \\\,\,\,\,\,\,66{,}4\end{array}$	67,89 – 23,4 = 44,49 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{\,\,\,\,67{,}89}\\{23{,}4}\end{array}} \\\,\,\,\,\,\,\,44{,}49\end{array}$
167,9 – 78,9 = 89 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{167{,}9}\\{78{,}9}\end{array}} \\\,\,\,\,\,89\end{array}$	123,56 – 56,78 = 66,78 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{123{,}56}\\{\,\,56{,}78}\end{array}} \\\,\,\,\,\,\,66{,}78\end{array}$	456,7 – 345,1 = 111,6 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{456{,}7}\\{345{,}1}\end{array}} \\\,\,\,\,\,111{,}6\end{array}$
23,67 – 7,89 = 15,78 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{23{,}67}\\{\,\,7{,}89}\end{array}} \\\,\,\,\,15{,}78\end{array}$	189,4 – 89,12 = 100,28 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{189{,}4}\\{\,\,\,\,89{,}12}\end{array}} \\\,\,\,\,\,100{,}28\end{array}$	5,678 – 2,34 = 3,338 $\begin{array}{l}\underline { - \begin{array}{cccccccccccccccccccc}{\,\,\,5{,}678}\\{2{,}34}\end{array}} \\\,\,\,\,\,\,\,3{,}338\end{array}$

Câu 4

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

123,4 – 5,67 = 117,73	78,9 – 2,345 = 76,555
456,7 – 1,23 = 455,47	234,5 – 12,34 = 222,16
89,12 – 6,789 = 82,331	345,6 – 3,45 = 342,15
167,8 – 23,456 = 144,344	56,78 – 7,123 = 49,657
345,9 – 4,56 = 341,34	189,2 – 5,678 = 183,522
12,34 – 2,134 = 10,206	67,89 – 1,23 = 66,66
25,5 – 10,25 = 15,25	456,1 – 6,12 = 449,98
56,7 – 3,456 = 53,244	123,6 – 4,567 = 119,033
189,4 – 12,34 = 177,06	345,2 – 2,789 = 342,411
7,89 – 1,23 = 6,66	167,9 – 5,67 = 162,23
456,8 – 23,45 = 433,35	89,1 – 3,678 = 85,422
12,345 – 6,12 = 6,225	234,6 – 1,789 = 232,811
345,1 – 78,9 = 266,2	56,78 – 4,56 = 52,22
123,7 – 5,678 = 118,022	189,5 – 2,34 = 187,16
67,89 – 3,45 = 64,44	456,2 – 12,345 = 443,855
234,5 – 89,12 = 145,38	7,123 – 1,234 = 5,889

Câu 5

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

234,56 – 78,9 = 155,66	12,345 – 3,67 = 8,675
456,1 – 123,4 = 332,7	89,12 – 5,678 = 83,442
7,89 – 2,134 = 5,756	345,9 – 167,8 = 178,1
167,4 – 56,78 = 110,62	23,456 – 6,12 = 17,336
345,6 – 89,34 = 256,26	5,678 – 1,234 = 4,444
24,63 – 9,17 = 15,46	189,5 – 78,9 = 110,6
56,7 – 23,45 = 33,25	456,2 – 234,1 = 222,1
123,6 – 7,89 = 115,71	67,123 – 12,34 = 54,783
189,2 – 5,67 = 183,53	345,7 – 123,56 = 222,14
456,8 – 167,9 = 288,9	23,67 – 2,345 = 21,325
89,1 – 3,456 = 85,644	12,34 – 6,789 = 5,551
234,5 – 78,12 = 156,38	167,8 – 56,7 = 111,1
5,12 – 1,23 = 3,89	345,1 – 189,4 = 155,7
67,89 – 23,456 = 44,434	456,9 – 234,5 = 222,4
123,45 – 4,678 = 118,772	42,31 – 18,92 = 23,39
189,6 – 89,1 = 100,5	56,78 – 12,34 = 44,44

Câu 6

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

56,78 – 12,34 = 44,44	345,6 – 123,45 = 222,15
189,2 – 7,89 = 181,31	23,456 – 5,678 = 17,778
456,7 – 234,1 = 222,6	12,34 – 3,123 = 9,217
7,123 – 2,56 = 4,563	89,1 – 6,789 = 82,311
134,5 – 56,7 = 77,8	37,25 – 12,84 = 24,41
23,67 – 4,56 = 19,11	189,4 – 78,9 = 110,5
12,345 – 1,234 = 11,111	456,2 – 234,56 = 221,64

Câu 7

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

123,45 – 6,78 = 116,67	345,9 – 167,12 = 178,78
51,23 – 27,84 = 23,39	12,345 – 3,456 = 8,889
78,9 – 2,134 = 76,766	189,4 – 56,7 = 132,7
23,67 – 5,678 = 17,992	67,89 – 12,34 = 55,55
345,1 – 89,34 = 255,76	5,123 – 1,23 = 3,893
167,8 – 78,9 = 88,9	234,56 – 123,4 = 111,16
12,34 – 4,567 = 7,773	456,2 – 189,5 = 266,7
56,78 – 23,45 = 33,33	13,59 – 5,21 = 8,38
189,2 – 7,89 = 181,31	9,99 – 4,62 = 5,37

Câu 8

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

234,5 – 78,9 = 155,6	12,34 – 5,678 = 6,662
456,1 – 123,67 = 332,43	89,34 – 2,134 = 87,206
7,89 – 3,456 = 4,434	50 – 28,57 = 21,43
167,9 – 56,12 = 111,78	23,456 – 6,78 = 16,676
345,2 – 89,1 = 256,1	5,123 – 1,234 = 3,889
47,12 – 19,73 = 27,39	189,5 – 67,89 = 121,61
56,7 – 23,45 = 33,25	456,8 – 234,5 = 222,3
123,4 – 7,123 = 116,277	78,9 – 12,34 = 66,56
189,6 – 5,67 = 183,93	345,1 – 167,9 = 177,2
5,678 – 2,345 = 3,333	23,67 – 4,56 = 19,11

Câu 9

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

78,9 – 23,45 = 55,45	345,6 – 167,8 = 177,8
456,7 – 123,4 = 333,3	12,345 – 5,67 = 6,675
5,678 – 2,134 = 3,544	189,2 – 56,78 = 132,42
134,5 – 7,89 = 126,61	6,45 – 2,18 = 4,27
345,1 – 89,34 = 255,76	67,123 – 12,34 = 54,783
12,34 – 3,456 = 8,884	456,8 – 234,5 = 222,3

Câu 10

Hướng dẫn chấm do TopStudy biên soạn, mang tính gợi ý

123,4 – 5,678 = 117,722	8,96 – 0,57 = 8,39
456,7 – 234,5 = 222,2	12,34 – 3,456 = 8,884
78,9 – 23,67 = 55,23	189,5 – 56,78 = 132,72
5,123 – 1,234 = 3,889	234,6 – 89,12 = 145,48
167,8 – 7,89 = 159,91	345,1 – 123,4 = 221,7
12,345 – 4,56 = 7,785	67,89 – 2,134 = 65,756
56,78 – 12,34 = 44,44	456,2 – 189,6 = 266,6
189,4 – 78,9 = 110,5	29,07 – 14,68 = 14,39
345,6 – 167,9 = 177,7	89,34 – 5,678 = 83,662
7,89 – 2,345 = 5,545	134,5 – 56,7 = 77,8
234,5 – 123,67 = 110,83	456,8 – 234,1 = 222,7
12,34 – 3,678 = 8,662	67,123 – 12,45 = 54,673
189,2 – 5,67 = 183,53	345,2 – 167,8 = 177,4
56,7 – 23,456 = 33,244	5,678 – 2,34 = 3,338
123,6 – 7,123 = 116,477	234,9 – 89,34 = 145,56
456,1 – 189,5 = 266,6	12,345 – 4,567 = 7,778