Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 569 · 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. 1.319 − 28 =
2. 2.566 − 69 =
3. 3.429 − 37 =
4. 4.133 − 69 =
5. 5.548 − 18 =
6. 6.589 − 88 =
7. 7.409 − 19 =
8. 8.293 − 49 =
9. 9.573 − 26 =
10. 10.190 − 78 =
11. 11.177 − 78 =
12. 12.158 − 56 =
13. 13.441 − 97 =
14. 14.173 − 47 =
15. 15.377 − 77 =
16. 16.521 − 88 =
17. 17.470 − 46 =
18. 18.377 − 49 =
19. 19.129 − 17 =
20. 20.210 − 16 =
21. 21.262 − 17 =
22. 22.146 − 16 =
23. 23.599 − 36 =
24. 24.515 − 66 =
25. 25.406 − 66 =
26. 26.154 − 19 =
27. 27.408 − 68 =
28. 28.525 − 19 =
29. 29.163 − 88 =
30. 30.440 − 56 =
31. 31.199 − 87 =
32. 32.583 − 67 =
33. 33.418 − 76 =
34. 34.153 − 97 =
35. 35.260 − 39 =
36. 36.190 − 36 =
37. 37.464 − 77 =
38. 38.181 − 17 =
39. 39.140 − 59 =
40. 40.541 − 69 =

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