Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 989 · 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. 1.553 − 69 =
2. 2.437 − 69 =
3. 3.527 − 39 =
4. 4.525 − 96 =
5. 5.157 − 86 =
6. 6.489 − 89 =
7. 7.378 − 56 =
8. 8.576 − 39 =
9. 9.313 − 88 =
10. 10.162 − 96 =
11. 11.543 − 59 =
12. 12.203 − 68 =
13. 13.404 − 29 =
14. 14.245 − 98 =
15. 15.368 − 36 =
16. 16.316 − 49 =
17. 17.357 − 28 =
18. 18.177 − 79 =
19. 19.235 − 59 =
20. 20.320 − 99 =
21. 21.466 − 77 =
22. 22.462 − 26 =
23. 23.204 − 86 =
24. 24.536 − 57 =
25. 25.373 − 18 =
26. 26.139 − 18 =
27. 27.183 − 26 =
28. 28.334 − 96 =
29. 29.201 − 66 =
30. 30.312 − 37 =
31. 31.162 − 58 =
32. 32.423 − 19 =
33. 33.575 − 46 =
34. 34.240 − 89 =
35. 35.266 − 99 =
36. 36.120 − 98 =
37. 37.204 − 36 =
38. 38.533 − 38 =
39. 39.590 − 46 =
40. 40.360 − 47 =

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