Squaring Numbers

 Multiplying Numbers

 Dividing Numbers

1. any by 0.125
2. 2 digits by 1 1/9
3. 2 digits by 1 1/8
4. 2 digits by 1 1/7
5. 2 digits by 1 1/6
6. 2 digits by 1 1/5
7. 2 digits by 1 1/4
8. 2 digits by 1 2/7
9. 2 digits by 1 1/3
10. 2 digits by 1 2/5
11. 2 digits by 1 3/7
12. 2 digits by 1 1/2
13. 2 digits by 1 3/5
14. 2 digits by 1 2/3
15. 2 digits by 1 3/4
16. 2 digits by 1 4/5
17. 2 digits by 2 2/9
18. 2 digits by 2 1/4
19. 2 digits by 2 1/3
20. 2,3 digits by 2 1/2
21. 2 digits by 2 2/3
22. 2 digits by 2 6/7
23. 2 digits by 3 1/8
24. 2,3 digits by 3 1/3
25. 2 digits by 3 1/2
26. 2 digits by 3 4/7
27. 2 digits by 4 1/6
28. 2 digits by 4 2/7
29. 2 digits by 4 4/9
30. 2 digits by 4 1/2
31. 2 digits by 5 5/7
32. 2 digits by 6 1/4
33. 2 digits by 6 2/3
34. 2 digits by 7 1/7
35. 2 digits by 7 1/2
36. 2 digits by 8 1/3
37. 2 digits by 8 4/7
38. 2 digits by 12 1/2
39. 2 digits by 15
40. 2,3 digits by 16 2/3
41. 2,3 digits by 25
42. 2,3 digits by 33 1/3
43. 2,3 digits by 35
44. 2 digits by 37 1/2
45. 2 digits by 40
46. 2 digits by 45
47. 2 digits by 50
48. 2 digits by 62 1/2
49. 2 digits by 66 2/3
50. 2,3 digits by 75
51. 2 digits by 83 1/3
52. 2 digits by 87 1/2
53. 2 digits by 125
54. 2 digits by 166 2/3
55. 2 digits by 250
56. 2,3 digits by 333 1/3
57. 2 digits by 375
58. 2 digits by 625
59. 2 digits by 875
60. 3 digits rep./37+41
61. 6 digits rep. by 15873
62. 6 digits rep. by 7, then 13
63. 6 digits rep. by 13, then 11
64. 6 digits rep. by 7,11,13, subtract 101
65. 6 digits rep. by 37037 x 5
66. mixed numbers by 2
67. diff. of squares of 2 consec. 2-digit numbers
68. diff. of squares of 2 different 2-digit numbers
69. sqrt of squares of 2-digit numbers ending in 1
70. sqrt of perfect squares ending in 5

 Adding Numbers

 Subtracting Numbers

 Finding Percents

Calculation
Practice Exercises

   Dividing a 2-digit number by 1 1/4

1. Select a 2-digit number.
2. Multiply by 8.
3. Move the decimal point one place to the left.

   Example:

1. The 2-digit number chosen to divide by 1 1/4 is 32.
2. Multiply by 8: 8 × 32 = 240 + 16 = 256
3. Move the decimal point one place to the left: 25.6
4. So 32 divided by 1 1/4 = 25.6.

   See the pattern?

1. The 2-digit number chosen to divide by 1 1/4 is 64.
2. Multiply by 8: 8 × 64 = 480 + 32 = 512
3. Move the decimal point one place to the left: 51.2
4. So 64 divided by 1 1/4 = 51.2.

Multiply from left to right for ease and accuracy. You will soon be doing this division by a mixed number quickly.