Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 975 · 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. 1.217 − 77 =
2. 2.149 − 76 =
3. 3.418 − 98 =
4. 4.315 − 86 =
5. 5.100 − 26 =
6. 6.250 − 67 =
7. 7.598 − 78 =
8. 8.478 − 57 =
9. 9.522 − 49 =
10. 10.104 − 87 =
11. 11.131 − 88 =
12. 12.407 − 17 =
13. 13.196 − 89 =
14. 14.236 − 16 =
15. 15.495 − 46 =
16. 16.298 − 88 =
17. 17.200 − 48 =
18. 18.412 − 18 =
19. 19.470 − 26 =
20. 20.403 − 18 =
21. 21.154 − 87 =
22. 22.168 − 27 =
23. 23.527 − 39 =
24. 24.312 − 66 =
25. 25.163 − 19 =
26. 26.66 − 29 =
27. 27.87 − 26 =
28. 28.59 − 46 =
29. 29.252 − 36 =
30. 30.302 − 76 =
31. 31.144 − 97 =
32. 32.475 − 28 =
33. 33.108 − 27 =
34. 34.409 − 28 =
35. 35.204 − 17 =
36. 36.81 − 37 =
37. 37.133 − 16 =
38. 38.448 − 57 =
39. 39.176 − 76 =
40. 40.445 − 98 =

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