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5th Grade Mental Math III

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This document contains examples of two-digit by one-digit multiplication problems and their solutions. For each problem, the steps show breaking the two-digit number into tens and ones, multiplying each place value by the one-digit number, and adding the partial products. The problems provide practice for 5th grade students on mental math skills for multi-digit multiplication.

$5th Grade Mental Math Two Digit by One Digit Multiplication I$

$40 x 3$

$120$

$70 x 2$

$140$

$30 x 8$

$240$

$50 x 7$

$350$

$20 x 9$

$180$

$60 x 7$

$420$

$30 x 4$

$120$

$80 x 7$

$560$

$90 x 4$

$360$

$70 x 9$

$630$

$23 x 3$

$20 x 3 is 60 and 3 x 3 is 9 and 60 + 9 gives a sum of 69$

$41 x 7$

$40 x 7 is 280 and 7 x 1 is 7 and 280 + 7 gives a sum of 287$

$72 x 2$

$70 x 2 is 140 and 2 x 2 is 4 and 140 + 4 gives a sum of 144$

$54 x 4$

$50 x 4 is 200 and 4 x 4 is 16 and 200 + 16 gives a sum of 216$

$26 x 3$

$20 x 3 is 60 and 6 x 3 is 18 and 60 + 18 gives a sum of 78$

$32 x 4$

$30 x 4 is 120 and 2 x 4 is 8 and 120 + 8 gives a sum of 128$

$83 x 2$

$80 x 2 is 160 and 3 x 2 is 6 and 160 + 6 gives a sum of 166$

$75 x 4$

$70 x 4 is 280 and 5 x 4 is 20 and 280 + 20 gives a sum of 300$

$91 x 6$

$90 x 6 is 540 and 1 x 6 is 6 and 540 + 6 gives a sum of 546$

$33 x 5$

$30 x 5 is 150 and 3 x 5 is 15 and 150 + 15 gives a sum of 165$

$22 x 7$

$20 x 7 is 140 and 2 x 7 is 14 and 140 + 14 gives a sum of 154$

$44 x 2$

$40 x 2 is 80 and 4 x 2 is 8 and 80 + 8 gives a sum of 88$

$52 x 3$

$50 x 3 is 150 and 2 x 3 is 6 and 150 + 6 gives a sum of 156$

$65 x 4$

$60 x 4 is 240 and 5 x 4 is 20 and 240 + 20 gives a sum of 260$

$71 x 8$

$70 x 8 is 560 and 1 x 8 is 8 and 560 + 8 gives a sum of 568$

$93 x 2$

$90 x 2 is 180 and 3 x 2 is 6 and 180 + 6 gives a sum of 186$

$47 x 2$

$40 x 2 is 80 and 7 x 2 is 14 and 80 + 14 gives a sum of 94$

$29 x 3$

$20 x 3 is 60 and 9 x 3 is 27 and 60 + 27 gives a sum of 87$

$68 x 4$

$60 x 4 is 240 and 8 x 4 is 32 and 240 + 32 gives a sum of 272$

$31 x 6$

$30 x 6 is 180 and 1 x 6 is 6 and 180 + 6 gives a sum of 186$

$5th Grade Mental Math Two Digit by One Digit Multiplication I$

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5th Grade Mental Math III

1. 5th Grade Mental Math Two Digit by One Digit Multiplication I

10. 20 x 9

12. 60 x 7

14. 30 x 4

16. 80 x 7

18. 90 x 4

20. 70 x 9

22. 23 x 3

23. 20 x 3 is 60 and 3 x 3 is 9 and 60 + 9 gives a sum of 69

24. 41 x 7

25. 40 x 7 is 280 and 7 x 1 is 7 and 280 + 7 gives a sum of 287

26. 72 x 2

27. 70 x 2 is 140 and 2 x 2 is 4 and 140 + 4 gives a sum of 144

28. 54 x 4

29. 50 x 4 is 200 and 4 x 4 is 16 and 200 + 16 gives a sum of 216

30. 26 x 3

31. 20 x 3 is 60 and 6 x 3 is 18 and 60 + 18 gives a sum of 78

32. 32 x 4

33. 30 x 4 is 120 and 2 x 4 is 8 and 120 + 8 gives a sum of 128

34. 83 x 2

35. 80 x 2 is 160 and 3 x 2 is 6 and 160 + 6 gives a sum of 166

36. 75 x 4

37. 70 x 4 is 280 and 5 x 4 is 20 and 280 + 20 gives a sum of 300

38. 91 x 6

39. 90 x 6 is 540 and 1 x 6 is 6 and 540 + 6 gives a sum of 546

40. 33 x 5

41. 30 x 5 is 150 and 3 x 5 is 15 and 150 + 15 gives a sum of 165

42. 22 x 7

43. 20 x 7 is 140 and 2 x 7 is 14 and 140 + 14 gives a sum of 154

44. 44 x 2

45. 40 x 2 is 80 and 4 x 2 is 8 and 80 + 8 gives a sum of 88

46. 52 x 3

47. 50 x 3 is 150 and 2 x 3 is 6 and 150 + 6 gives a sum of 156

48. 65 x 4

49. 60 x 4 is 240 and 5 x 4 is 20 and 240 + 20 gives a sum of 260

50. 71 x 8

51. 70 x 8 is 560 and 1 x 8 is 8 and 560 + 8 gives a sum of 568

52. 93 x 2

53. 90 x 2 is 180 and 3 x 2 is 6 and 180 + 6 gives a sum of 186

54. 47 x 2

55. 40 x 2 is 80 and 7 x 2 is 14 and 80 + 14 gives a sum of 94

56. 29 x 3

57. 20 x 3 is 60 and 9 x 3 is 27 and 60 + 27 gives a sum of 87

58. 68 x 4

59. 60 x 4 is 240 and 8 x 4 is 32 and 240 + 32 gives a sum of 272

60. 31 x 6

61. 30 x 6 is 180 and 1 x 6 is 6 and 180 + 6 gives a sum of 186

62. 5th Grade Mental Math Two Digit by One Digit Multiplication I