Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 59 · 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. 1.491 − 18 =
2. 2.503 − 76 =
3. 3.287 − 97 =
4. 4.293 − 16 =
5. 5.148 − 87 =
6. 6.566 − 58 =
7. 7.492 − 76 =
8. 8.183 − 77 =
9. 9.130 − 87 =
10. 10.191 − 36 =
11. 11.204 − 47 =
12. 12.482 − 87 =
13. 13.449 − 89 =
14. 14.512 − 28 =
15. 15.565 − 97 =
16. 16.224 − 98 =
17. 17.382 − 38 =
18. 18.130 − 27 =
19. 19.523 − 49 =
20. 20.105 − 36 =
21. 21.519 − 18 =
22. 22.473 − 37 =
23. 23.467 − 18 =
24. 24.179 − 37 =
25. 25.287 − 36 =
26. 26.312 − 79 =
27. 27.153 − 57 =
28. 28.331 − 66 =
29. 29.360 − 47 =
30. 30.533 − 78 =
31. 31.338 − 96 =
32. 32.224 − 16 =
33. 33.519 − 28 =
34. 34.268 − 96 =
35. 35.508 − 56 =
36. 36.485 − 19 =
37. 37.362 − 16 =
38. 38.165 − 29 =
39. 39.160 − 97 =
40. 40.139 − 49 =

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