Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 26 · 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. 1.501 − 19 =
2. 2.283 − 49 =
3. 3.309 − 17 =
4. 4.403 − 87 =
5. 5.402 − 88 =
6. 6.226 − 58 =
7. 7.414 − 58 =
8. 8.148 − 18 =
9. 9.349 − 57 =
10. 10.501 − 16 =
11. 11.168 − 98 =
12. 12.173 − 76 =
13. 13.52 − 39 =
14. 14.515 − 69 =
15. 15.133 − 79 =
16. 16.566 − 56 =
17. 17.216 − 99 =
18. 18.268 − 27 =
19. 19.239 − 37 =
20. 20.456 − 18 =
21. 21.173 − 18 =
22. 22.378 − 37 =
23. 23.556 − 96 =
24. 24.543 − 98 =
25. 25.513 − 17 =
26. 26.572 − 36 =
27. 27.173 − 78 =
28. 28.525 − 18 =
29. 29.590 − 57 =
30. 30.543 − 37 =
31. 31.190 − 78 =
32. 32.459 − 59 =
33. 33.365 − 46 =
34. 34.135 − 57 =
35. 35.122 − 26 =
36. 36.55 − 18 =
37. 37.257 − 36 =
38. 38.538 − 17 =
39. 39.383 − 38 =
40. 40.396 − 89 =

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