Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 27 · 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. 1.107 − 89 =
2. 2.84 − 27 =
3. 3.261 − 98 =
4. 4.155 − 58 =
5. 5.339 − 47 =
6. 6.81 − 59 =
7. 7.88 − 86 =
8. 8.535 − 69 =
9. 9.299 − 96 =
10. 10.210 − 66 =
11. 11.258 − 79 =
12. 12.108 − 47 =
13. 13.70 − 67 =
14. 14.284 − 46 =
15. 15.542 − 69 =
16. 16.546 − 47 =
17. 17.530 − 67 =
18. 18.176 − 46 =
19. 19.535 − 37 =
20. 20.581 − 16 =
21. 21.547 − 77 =
22. 22.54 − 36 =
23. 23.478 − 26 =
24. 24.297 − 68 =
25. 25.151 − 98 =
26. 26.267 − 16 =
27. 27.598 − 17 =
28. 28.572 − 28 =
29. 29.58 − 18 =
30. 30.594 − 17 =
31. 31.323 − 88 =
32. 32.440 − 66 =
33. 33.193 − 26 =
34. 34.501 − 39 =
35. 35.401 − 36 =
36. 36.509 − 37 =
37. 37.308 − 38 =
38. 38.337 − 16 =
39. 39.446 − 76 =
40. 40.400 − 27 =

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