Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 985 · 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. 1.566 − 88 =
2. 2.202 − 28 =
3. 3.342 − 76 =
4. 4.597 − 76 =
5. 5.483 − 19 =
6. 6.262 − 97 =
7. 7.322 − 89 =
8. 8.484 − 36 =
9. 9.482 − 68 =
10. 10.182 − 57 =
11. 11.277 − 86 =
12. 12.583 − 58 =
13. 13.128 − 77 =
14. 14.469 − 67 =
15. 15.177 − 26 =
16. 16.507 − 66 =
17. 17.79 − 56 =
18. 18.197 − 18 =
19. 19.282 − 28 =
20. 20.154 − 29 =
21. 21.269 − 56 =
22. 22.286 − 29 =
23. 23.412 − 57 =
24. 24.204 − 36 =
25. 25.316 − 27 =
26. 26.527 − 69 =
27. 27.559 − 79 =
28. 28.526 − 78 =
29. 29.588 − 29 =
30. 30.178 − 17 =
31. 31.338 − 76 =
32. 32.308 − 27 =
33. 33.258 − 87 =
34. 34.216 − 58 =
35. 35.132 − 16 =
36. 36.407 − 26 =
37. 37.443 − 29 =
38. 38.176 − 49 =
39. 39.470 − 49 =
40. 40.84 − 37 =

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