Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 611 · 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. 1.269 − 98 =
2. 2.478 − 48 =
3. 3.325 − 98 =
4. 4.465 − 36 =
5. 5.285 − 38 =
6. 6.172 − 58 =
7. 7.358 − 46 =
8. 8.323 − 37 =
9. 9.103 − 58 =
10. 10.406 − 39 =
11. 11.109 − 76 =
12. 12.298 − 37 =
13. 13.109 − 86 =
14. 14.497 − 37 =
15. 15.388 − 99 =
16. 16.584 − 76 =
17. 17.297 − 47 =
18. 18.378 − 56 =
19. 19.137 − 56 =
20. 20.577 − 56 =
21. 21.150 − 38 =
22. 22.549 − 29 =
23. 23.274 − 16 =
24. 24.134 − 99 =
25. 25.579 − 29 =
26. 26.166 − 27 =
27. 27.404 − 26 =
28. 28.525 − 67 =
29. 29.169 − 26 =
30. 30.465 − 18 =
31. 31.287 − 68 =
32. 32.285 − 99 =
33. 33.372 − 27 =
34. 34.532 − 96 =
35. 35.107 − 59 =
36. 36.119 − 19 =
37. 37.559 − 46 =
38. 38.158 − 88 =
39. 39.305 − 69 =
40. 40.75 − 57 =

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