4.NBT.5

Multiply a whole number of up to four digits by a one-digit whole number, and multiply two two-digit numbers, using strategies based on place value and the properties of operations. Illustrate and explain the calculation by using equations, rectangular arrays, and/or area models.

1. Changing Numbers - 11 to 110
2. Changing Numbers - 72 to 720
3. Use the pattern: 2 x 2, 20 x 2, 200 x 2
4. Use the pattern: 2 x 4, 2 x 40, 2 x 400
5. Use the pattern: 2 x 8, 2 x 80, 2 x 800
6. Use the pattern: 2 x 6, 2 x 60, 2 x 600
7. Use the pattern: 2 x 1, 2 x 11, 2 x 111
8. Same or different: Click all boxes with the answer 18.
9. Same or different: Click all boxes with the answer 16.
10. Same or different: Click all boxes with the answer 15.
11. Hit the big times: 12 x 2
12. Hit the big times: 14 x 2
13. Hit the big times: 11 x 5
14. Hit the big times: 13 x 2
15. Hit the big times: 12 x 4
16. Hit the big times: 31 x 3
17. Hit the big times 42x2
18. Hit the big times: 21 x 4
19. Hit the big times 30x2
20. Hit the big times: 12 x 3
21. Use the pattern: 3 x 15 = 3 x 10 + 3 x 5
22. Times machine: write the correct multiplier on the times machine
23. Times machine: write the correct multiplier on the times machine
24. True or False: 24 x 5 = 120
25. True or False: 31 x 7 = 217
26. True or False: 18 x 6 = 118
27. True or False: 61 x 8 = 486
28. True or False: 13 x 9 = 117
29. Product Launch: 24 x 4
30. Double up: Double 99, 990
31. Double up: Double 38, 380
32. Same or different: Click all the boxes where the answer is the same.
33. Same or different: Click all the boxes where the answer is the same.
34. Same or different: Click all the boxes where the answer is the same.
35. Same or different: Click all the boxes where the answer is the same.
36. Same or different: Click all the boxes where the answer is the same.
37. Multi-multiplication: Use 4 different multipliers to change the number 25
38. Multi-multiplication: Use 4 different multipliers to change the number 32
39. Multi-multiplication: Use 4 different multipliers to change the number 24
40. Divide and Multiply
41. Divide and multiply - 8, 480
42. Divide and multiply - 8,720
43. Divide and multiply - 40, 320
44. Divide and multiply - 30, 210
45. Divide and multiply: 63 / 9
46. Divide and multiply: 36 / 4
47. Divide and multiply 240/6
48. Farm Products: Write the product of 4 and 8
49. Farm Products: Write the product of 3 and 8
50. Use the pattern: 4 x 16 = 4 x 10 + 4 x 6
51. Use the pattern: 5 x 15 = 5 x 10 + 5 x 5
52. Use the pattern: 4 x 23 = 4 x 20 + 4 x 3
53. Use the pattern: 2 x 26 = 2 x 20 + 2 x 6
54. Use the pattern: 8x43 = 8x40 + 8x3
55. Use the pattern: 5 x 35 = 5 x 30 + 5 x 5
56. Use the pattern: 9x63 = 9x60 + 9x3
57. Use the pattern: 6x84 = 6x80 + 6x4
58. Use the pattern: 4x73 = 4x70 + 4x3
59. Use the pattern: 5x44 = 5x40 + 5x4
60. Use the pattern: 8x62 = 8x60 + 8x2
61. Use the pattern: 3x64 = 3x60 + 3x4
62. Use the pattern: 7x56 = 7x50 + 7x6
63. Use the pattern: 6x78 = 6x70 + 6x8
64. Product Launch: 32 x 8
65. Product Launch: 61 x 8
66. Product Launch: 2x96
67. Product Launch: 49 x 3
68. Product Launch: 6x70
69. Same or different: Click all the boxes where the answer is the same
70. Same or different: Click the box where the answer is different
71. Same or different: Are these products the same?
72. Changing Numbers - 9 to 9000
73. Changing Numbers - 44 to 4400
74. Changing Numbers - 36 to 3600
75. Changing Numbers - 24 to 2400
76. Changing Numbers - 12 to 1200
77. Divide and multiply: 56 / 7
78. Divide and multiply: 64 / 8
79. Double up: Double 50, 50,000
80. Double up: Double 24, 2,400
81. Divide and Multiply
82. Double up: Double 16, 1,600
83. Divide and multiply - 400/5