Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 179 · 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. 1.116 − 87 =
2. 2.527 − 49 =
3. 3.401 − 67 =
4. 4.281 − 16 =
5. 5.418 − 99 =
6. 6.406 − 76 =
7. 7.196 − 18 =
8. 8.333 − 77 =
9. 9.143 − 57 =
10. 10.289 − 78 =
11. 11.206 − 76 =
12. 12.349 − 78 =
13. 13.96 − 66 =
14. 14.335 − 97 =
15. 15.586 − 76 =
16. 16.527 − 46 =
17. 17.227 − 39 =
18. 18.470 − 57 =
19. 19.413 − 69 =
20. 20.456 − 29 =
21. 21.158 − 29 =
22. 22.162 − 28 =
23. 23.397 − 38 =
24. 24.340 − 19 =
25. 25.406 − 97 =
26. 26.183 − 29 =
27. 27.317 − 89 =
28. 28.251 − 19 =
29. 29.106 − 26 =
30. 30.295 − 78 =
31. 31.197 − 46 =
32. 32.254 − 77 =
33. 33.221 − 77 =
34. 34.358 − 16 =
35. 35.126 − 86 =
36. 36.596 − 76 =
37. 37.398 − 66 =
38. 38.221 − 86 =
39. 39.135 − 79 =
40. 40.410 − 68 =

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