Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 701 · 40 questions

The fast method (Shift both): How much makes the second number round? 68 needs 2 to make 70. Add that amount to BOTH numbers. Take away the round number.

1. 1.172 − 19 =
2. 2.208 − 79 =
3. 3.196 − 98 =
4. 4.526 − 68 =
5. 5.441 − 47 =
6. 6.598 − 37 =
7. 7.511 − 89 =
8. 8.323 − 87 =
9. 9.293 − 98 =
10. 10.132 − 37 =
11. 11.421 − 18 =
12. 12.144 − 89 =
13. 13.505 − 16 =
14. 14.308 − 89 =
15. 15.114 − 29 =
16. 16.397 − 18 =
17. 17.519 − 47 =
18. 18.346 − 98 =
19. 19.293 − 36 =
20. 20.100 − 89 =
21. 21.102 − 88 =
22. 22.175 − 87 =
23. 23.181 − 19 =
24. 24.310 − 29 =
25. 25.243 − 59 =
26. 26.431 − 39 =
27. 27.546 − 19 =
28. 28.540 − 87 =
29. 29.566 − 96 =
30. 30.218 − 97 =
31. 31.585 − 86 =
32. 32.161 − 49 =
33. 33.555 − 58 =
34. 34.516 − 16 =
35. 35.166 − 28 =
36. 36.357 − 56 =
37. 37.245 − 56 =
38. 38.217 − 17 =
39. 39.103 − 97 =
40. 40.124 − 68 =

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