Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 537 · 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. 1.98 − 88 =
2. 2.422 − 37 =
3. 3.381 − 67 =
4. 4.555 − 76 =
5. 5.272 − 18 =
6. 6.490 − 96 =
7. 7.68 − 19 =
8. 8.337 − 38 =
9. 9.401 − 29 =
10. 10.139 − 98 =
11. 11.52 − 28 =
12. 12.152 − 86 =
13. 13.143 − 56 =
14. 14.276 − 18 =
15. 15.448 − 57 =
16. 16.427 − 69 =
17. 17.316 − 18 =
18. 18.485 − 17 =
19. 19.465 − 37 =
20. 20.518 − 57 =
21. 21.313 − 27 =
22. 22.338 − 19 =
23. 23.545 − 27 =
24. 24.192 − 18 =
25. 25.396 − 77 =
26. 26.425 − 99 =
27. 27.318 − 68 =
28. 28.397 − 48 =
29. 29.285 − 16 =
30. 30.267 − 78 =
31. 31.90 − 56 =
32. 32.308 − 28 =
33. 33.208 − 27 =
34. 34.573 − 68 =
35. 35.113 − 39 =
36. 36.496 − 67 =
37. 37.460 − 98 =
38. 38.139 − 49 =
39. 39.387 − 69 =
40. 40.348 − 59 =

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