Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 871 · 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. 1.529 − 98 =
2. 2.144 − 17 =
3. 3.479 − 17 =
4. 4.349 − 37 =
5. 5.313 − 68 =
6. 6.538 − 19 =
7. 7.559 − 79 =
8. 8.403 − 88 =
9. 9.362 − 16 =
10. 10.252 − 76 =
11. 11.153 − 76 =
12. 12.593 − 77 =
13. 13.407 − 59 =
14. 14.366 − 48 =
15. 15.482 − 16 =
16. 16.135 − 88 =
17. 17.204 − 89 =
18. 18.228 − 27 =
19. 19.389 − 27 =
20. 20.565 − 26 =
21. 21.577 − 36 =
22. 22.398 − 78 =
23. 23.201 − 26 =
24. 24.210 − 26 =
25. 25.297 − 27 =
26. 26.245 − 77 =
27. 27.258 − 66 =
28. 28.355 − 79 =
29. 29.498 − 27 =
30. 30.520 − 66 =
31. 31.207 − 78 =
32. 32.322 − 96 =
33. 33.221 − 89 =
34. 34.97 − 36 =
35. 35.54 − 37 =
36. 36.189 − 89 =
37. 37.432 − 96 =
38. 38.329 − 99 =
39. 39.118 − 38 =
40. 40.406 − 49 =

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