Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 682 · 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. 1.543 − 57 =
2. 2.170 − 67 =
3. 3.443 − 76 =
4. 4.62 − 28 =
5. 5.143 − 57 =
6. 6.163 − 87 =
7. 7.379 − 16 =
8. 8.160 − 86 =
9. 9.297 − 78 =
10. 10.209 − 57 =
11. 11.156 − 86 =
12. 12.551 − 37 =
13. 13.190 − 39 =
14. 14.245 − 79 =
15. 15.508 − 89 =
16. 16.424 − 78 =
17. 17.324 − 49 =
18. 18.584 − 86 =
19. 19.535 − 76 =
20. 20.560 − 18 =
21. 21.341 − 36 =
22. 22.389 − 69 =
23. 23.153 − 76 =
24. 24.168 − 78 =
25. 25.322 − 17 =
26. 26.588 − 66 =
27. 27.260 − 29 =
28. 28.511 − 27 =
29. 29.360 − 27 =
30. 30.186 − 96 =
31. 31.372 − 79 =
32. 32.142 − 29 =
33. 33.421 − 46 =
34. 34.245 − 36 =
35. 35.344 − 66 =
36. 36.279 − 49 =
37. 37.329 − 48 =
38. 38.561 − 27 =
39. 39.551 − 47 =
40. 40.289 − 87 =

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