Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 691 · 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. 1.114 − 16 =
2. 2.176 − 76 =
3. 3.476 − 37 =
4. 4.66 − 19 =
5. 5.402 − 88 =
6. 6.342 − 16 =
7. 7.161 − 28 =
8. 8.384 − 37 =
9. 9.144 − 26 =
10. 10.218 − 58 =
11. 11.84 − 28 =
12. 12.501 − 17 =
13. 13.207 − 79 =
14. 14.521 − 19 =
15. 15.540 − 16 =
16. 16.347 − 97 =
17. 17.177 − 18 =
18. 18.580 − 59 =
19. 19.107 − 79 =
20. 20.470 − 57 =
21. 21.122 − 78 =
22. 22.355 − 26 =
23. 23.350 − 37 =
24. 24.409 − 89 =
25. 25.137 − 87 =
26. 26.146 − 88 =
27. 27.135 − 86 =
28. 28.286 − 18 =
29. 29.525 − 77 =
30. 30.273 − 56 =
31. 31.344 − 49 =
32. 32.246 − 67 =
33. 33.319 − 18 =
34. 34.220 − 38 =
35. 35.327 − 46 =
36. 36.194 − 97 =
37. 37.348 − 69 =
38. 38.52 − 48 =
39. 39.397 − 17 =
40. 40.209 − 26 =

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