Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 485 · 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. 1.484 − 97 =
2. 2.589 − 67 =
3. 3.524 − 59 =
4. 4.585 − 28 =
5. 5.154 − 98 =
6. 6.167 − 26 =
7. 7.387 − 96 =
8. 8.284 − 87 =
9. 9.91 − 17 =
10. 10.557 − 89 =
11. 11.319 − 86 =
12. 12.376 − 58 =
13. 13.275 − 57 =
14. 14.146 − 68 =
15. 15.501 − 98 =
16. 16.275 − 77 =
17. 17.409 − 26 =
18. 18.193 − 47 =
19. 19.326 − 76 =
20. 20.83 − 17 =
21. 21.173 − 69 =
22. 22.268 − 58 =
23. 23.507 − 67 =
24. 24.598 − 88 =
25. 25.317 − 59 =
26. 26.114 − 39 =
27. 27.575 − 57 =
28. 28.189 − 98 =
29. 29.484 − 79 =
30. 30.329 − 36 =
31. 31.584 − 47 =
32. 32.535 − 88 =
33. 33.129 − 88 =
34. 34.279 − 49 =
35. 35.524 − 48 =
36. 36.307 − 66 =
37. 37.404 − 58 =
38. 38.262 − 77 =
39. 39.212 − 39 =
40. 40.495 − 97 =

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