Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 430 · 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. 1.320 − 98 =
2. 2.584 − 27 =
3. 3.491 − 57 =
4. 4.347 − 39 =
5. 5.178 − 96 =
6. 6.370 − 39 =
7. 7.227 − 16 =
8. 8.532 − 59 =
9. 9.178 − 66 =
10. 10.506 − 66 =
11. 11.166 − 37 =
12. 12.238 − 26 =
13. 13.378 − 27 =
14. 14.215 − 86 =
15. 15.426 − 47 =
16. 16.374 − 36 =
17. 17.504 − 36 =
18. 18.97 − 39 =
19. 19.300 − 18 =
20. 20.511 − 56 =
21. 21.179 − 36 =
22. 22.290 − 99 =
23. 23.582 − 38 =
24. 24.250 − 69 =
25. 25.188 − 88 =
26. 26.268 − 37 =
27. 27.311 − 68 =
28. 28.189 − 29 =
29. 29.445 − 66 =
30. 30.499 − 28 =
31. 31.510 − 29 =
32. 32.424 − 88 =
33. 33.537 − 48 =
34. 34.477 − 29 =
35. 35.397 − 28 =
36. 36.569 − 16 =
37. 37.203 − 79 =
38. 38.56 − 49 =
39. 39.303 − 16 =
40. 40.139 − 59 =

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