Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 654 · 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. 1.173 − 77 =
2. 2.403 − 69 =
3. 3.531 − 27 =
4. 4.261 − 86 =
5. 5.133 − 18 =
6. 6.556 − 98 =
7. 7.487 − 99 =
8. 8.366 − 49 =
9. 9.512 − 36 =
10. 10.492 − 26 =
11. 11.132 − 68 =
12. 12.411 − 78 =
13. 13.166 − 39 =
14. 14.178 − 86 =
15. 15.394 − 59 =
16. 16.326 − 66 =
17. 17.332 − 66 =
18. 18.182 − 18 =
19. 19.291 − 18 =
20. 20.526 − 39 =
21. 21.346 − 48 =
22. 22.179 − 26 =
23. 23.220 − 96 =
24. 24.561 − 39 =
25. 25.451 − 16 =
26. 26.357 − 79 =
27. 27.356 − 39 =
28. 28.124 − 56 =
29. 29.232 − 89 =
30. 30.466 − 96 =
31. 31.387 − 99 =
32. 32.75 − 26 =
33. 33.55 − 18 =
34. 34.133 − 26 =
35. 35.584 − 78 =
36. 36.358 − 76 =
37. 37.491 − 98 =
38. 38.358 − 56 =
39. 39.398 − 87 =
40. 40.165 − 66 =

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