Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 771 · 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. 1.321 − 86 =
2. 2.69 − 28 =
3. 3.159 − 86 =
4. 4.465 − 19 =
5. 5.107 − 86 =
6. 6.599 − 38 =
7. 7.457 − 59 =
8. 8.215 − 98 =
9. 9.146 − 49 =
10. 10.279 − 86 =
11. 11.171 − 76 =
12. 12.259 − 86 =
13. 13.285 − 98 =
14. 14.518 − 37 =
15. 15.137 − 78 =
16. 16.502 − 16 =
17. 17.373 − 96 =
18. 18.251 − 79 =
19. 19.109 − 57 =
20. 20.393 − 98 =
21. 21.368 − 86 =
22. 22.543 − 78 =
23. 23.118 − 98 =
24. 24.347 − 28 =
25. 25.593 − 17 =
26. 26.218 − 68 =
27. 27.143 − 39 =
28. 28.444 − 19 =
29. 29.67 − 46 =
30. 30.194 − 79 =
31. 31.324 − 57 =
32. 32.531 − 86 =
33. 33.430 − 79 =
34. 34.106 − 59 =
35. 35.118 − 26 =
36. 36.470 − 48 =
37. 37.342 − 69 =
38. 38.427 − 77 =
39. 39.346 − 26 =
40. 40.338 − 17 =

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