Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 143 · 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. 1.267 − 99 =
2. 2.595 − 29 =
3. 3.244 − 48 =
4. 4.349 − 56 =
5. 5.576 − 58 =
6. 6.291 − 48 =
7. 7.466 − 17 =
8. 8.78 − 28 =
9. 9.299 − 97 =
10. 10.433 − 49 =
11. 11.523 − 49 =
12. 12.312 − 16 =
13. 13.586 − 16 =
14. 14.575 − 56 =
15. 15.212 − 76 =
16. 16.217 − 37 =
17. 17.567 − 99 =
18. 18.568 − 58 =
19. 19.186 − 87 =
20. 20.290 − 29 =
21. 21.202 − 37 =
22. 22.506 − 88 =
23. 23.64 − 16 =
24. 24.251 − 79 =
25. 25.236 − 39 =
26. 26.183 − 68 =
27. 27.211 − 26 =
28. 28.490 − 17 =
29. 29.315 − 76 =
30. 30.475 − 98 =
31. 31.526 − 37 =
32. 32.316 − 86 =
33. 33.355 − 97 =
34. 34.545 − 98 =
35. 35.584 − 88 =
36. 36.431 − 68 =
37. 37.110 − 87 =
38. 38.124 − 19 =
39. 39.576 − 56 =
40. 40.188 − 97 =

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