Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 425 · 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. 1.126 − 29 =
2. 2.302 − 37 =
3. 3.217 − 99 =
4. 4.231 − 56 =
5. 5.461 − 88 =
6. 6.131 − 56 =
7. 7.553 − 97 =
8. 8.288 − 89 =
9. 9.353 − 26 =
10. 10.226 − 49 =
11. 11.599 − 97 =
12. 12.314 − 49 =
13. 13.208 − 17 =
14. 14.585 − 39 =
15. 15.597 − 96 =
16. 16.122 − 39 =
17. 17.492 − 59 =
18. 18.162 − 28 =
19. 19.444 − 27 =
20. 20.101 − 87 =
21. 21.306 − 18 =
22. 22.252 − 96 =
23. 23.344 − 99 =
24. 24.368 − 66 =
25. 25.259 − 27 =
26. 26.60 − 37 =
27. 27.244 − 28 =
28. 28.325 − 19 =
29. 29.155 − 58 =
30. 30.250 − 37 =
31. 31.79 − 37 =
32. 32.315 − 88 =
33. 33.267 − 58 =
34. 34.151 − 49 =
35. 35.360 − 88 =
36. 36.557 − 36 =
37. 37.179 − 28 =
38. 38.194 − 67 =
39. 39.145 − 47 =
40. 40.104 − 86 =

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