Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 908 · 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. 1.277 − 37 =
2. 2.561 − 18 =
3. 3.526 − 27 =
4. 4.361 − 59 =
5. 5.418 − 18 =
6. 6.183 − 49 =
7. 7.94 − 36 =
8. 8.513 − 87 =
9. 9.237 − 86 =
10. 10.453 − 37 =
11. 11.396 − 76 =
12. 12.334 − 68 =
13. 13.282 − 37 =
14. 14.273 − 76 =
15. 15.89 − 86 =
16. 16.136 − 57 =
17. 17.275 − 96 =
18. 18.157 − 37 =
19. 19.137 − 38 =
20. 20.378 − 59 =
21. 21.536 − 49 =
22. 22.119 − 16 =
23. 23.479 − 39 =
24. 24.561 − 47 =
25. 25.103 − 79 =
26. 26.341 − 86 =
27. 27.495 − 19 =
28. 28.222 − 99 =
29. 29.213 − 78 =
30. 30.491 − 18 =
31. 31.207 − 57 =
32. 32.545 − 29 =
33. 33.517 − 56 =
34. 34.570 − 67 =
35. 35.409 − 87 =
36. 36.54 − 16 =
37. 37.474 − 16 =
38. 38.377 − 28 =
39. 39.105 − 86 =
40. 40.507 − 16 =

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