Bài tập Toán lớp 5 Nhân một số thập phân với một số tự nhiên có đáp án

23,4 × 2 = 46,8

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{23,4}\\{\,\,\,\,\,\,\,2}\end{array}} \\\,\,\,46,8\end{array}\)

56,78 × 3 = 170,34

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{56,78}\\{\,\,\,\,\,\,\,\,\,\,3}\end{array}} \\170,34\end{array}\)

89,12 × 6 = 534,72

\(\begin{array}{l}\underline {\, \times \begin{array}{*{20}{c}}{89,12}\\{\,\,\,\,\,\,\,\,6}\end{array}} \\\,534,72\end{array}\)

34,56 × 7 = 241,92

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{34,56}\\{\,\,\,\,\,\,\,\,\,\,7}\end{array}} \\241,92\end{array}\)

83,45 × 2 = 166,9

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{83,45}\\{\,\,\,\,\,\,\,\,\,\,2}\end{array}} \\166,9\end{array}\)

56,7 × 4 = 226,8

\(\begin{array}{l}\underline { \times \begin{array}{*{20}{c}}{56,7}\\{\,\,\,\,\,\,\,4}\end{array}} \\226,8\end{array}\)

29,4 × 53 = 1558,2

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{29,4}\\{\,\,\,\,53}\end{array}} \\\,\,\,\,\,\,882\\\underline {1470\,\,\,\,\,\,\,} \\1558,2\end{array}\)

56,7 × 41 = 2324,7

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{56,7}\\{\,\,\,\,\,41}\end{array}} \\\,\,\,\,\,\,\,\,567\\\underline {\,\,2268\,\,\,\,\,\,\,} \\2324,7\end{array}\)

78,23 × 27 = 2112,21

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{78,23}\\{\,\,\,\,\,\,\,27}\end{array}} \\\,\,\,\,54761\\\underline {\,15646\,\,\,\,\,\,\,} \\2112,21\end{array}\)

45,6 × 89 = 4058,4

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{45,6}\\{\,\,\,\,\,89}\end{array}} \\\,\,\,\,4104\\\underline {\,3648\,\,\,\,\,\,\,} \\4058,4\end{array}\)

83,45 × 19 = 1585,55

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{83,45}\\{\,\,\,\,\,\,\,19}\end{array}} \\\,\,\,75105\\\underline {\,\,\,8345\,\,\,\,\,\,\,} \\1585,55\end{array}\)

29,3 × 67 = 1963,1

\(\begin{array}{l}\underline {\,\, \times \begin{array}{*{20}{c}}{29,3}\\{\,\,\,\,67}\end{array}} \\\,\,\,\,2051\\\underline {\,1758\,\,\,\,\,\,\,} \\1963,1\end{array}\)

23,4 × 5 = 117

56,78 × 12 = 681,36

34,5 × 78 = 2691

67,1 × 234 = 15701,4

45,6 × 567 = 25855,2

78,9 × 3 = 236,7

56,12 × 9 = 505,08

89,1 × 45 = 4009,5

67,123 × 123 = 8256,129

29,3 × 678 = 19865,4

78,23 × 2 = 156,46

34,56 × 789 = 27267,84

83,4 × 345 = 28773

45,67 × 56 = 2557,52

29,4 × 91 = 2675,4

56,7 × 234 = 13267,8

23,456 × 7 = 164,192

67,89 × 456 = 30957,84

34,5 × 89 = 3070,5

78,9 × 4 = 315,6

45,67 × 23 = 1050,41

89,12 × 567 = 50531,04

56,78 × 6 = 340,68

29,3 × 345 = 10108,5

67,1 × 678 = 45513,8

83,45 × 8 = 667,6

78,23 × 123 = 9622,29

34,56 × 91 = 3144,96

89,1 × 234 = 20849,4

45,6 × 789 = 35978,4

23,4 × 56 = 1310,4

56,7 × 345 = 19561,5

6,4 × 7 = 44,8

0,82 × 12 = 9,84

0,35 × 18 = 6,3

15,6 × 9 = 140,4

28,7 × 5 = 143,5

2,48 × 15 = 37,2

1,92 × 14 = 26,88

0,176 × 25 = 4,4

0,264 × 30 = 7,92

54,3 × 6 = 325,8

73,8 × 4 = 295,2

4,56 × 13 = 59,28

3,75 × 16 = 60

0,392 × 20 = 7,84

0,128 × 45 = 5,76

21,64 × 7 = 151,48

19,2 × 11 = 211,2

1,875 × 24 = 45

0,696 × 28 = 19,488

0,504 × 35 = 17,64

47,5 × 3 = 142,5

2,916 × 17 = 49,572

0,472 × 40 = 18,88

12,85 × 8 = 102,8

8,64 × 19 = 164,16

0,056 × 75 = 4,2

0,216 × 55 = 11,88

36,9 × 2 = 73,8

2,808 × 12 = 33,696

0,624 × 32 = 19,968

0,075 × 60 = 4,5

17,4 × 11 = 191,4

7,82 × 9 = 70,38

0,413 × 15 = 6,195

0,0573 × 45 = 2,5785

23,17 × 7 = 162,19

84,6 × 4 = 338,4

1,506 × 12 = 18,072

0,1289 × 25 = 3,2225

0,00742 × 80 = 0,5936

12,375 × 8 = 99

3,284 × 20 = 65,68

0,6942 × 35 = 24,297

0,03156 × 125 = 3,945

3,27 × 4 = 13,08

0,372 × 14 = 5,208

1,56 × 5 = 7,8

6,24 × 3 = 18,72

73,2 × 5 = 366

7,12 × 6 = 42,72

4,35 × 7 = 30,45

0,0517 × 75 = 3,8775

11,875 × 7 = 83,125

2,793 × 16 = 44,688

0,5364 × 30 = 16,092

0,1265 × 90 = 11,385

1,709 × 13 = 22,217

38,42 × 4 = 153,68

6,14 × 8 = 49,12

5,43 × 2 = 10,86

0,0835 × 40 = 3,34

19,46 × 6 = 116,76

73,2 × 15 = 1098

1,628 × 11 = 17,908