Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 512 · 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. 1.176 − 16 =
2. 2.361 − 58 =
3. 3.172 − 49 =
4. 4.463 − 68 =
5. 5.279 − 68 =
6. 6.213 − 66 =
7. 7.191 − 99 =
8. 8.152 − 99 =
9. 9.586 − 87 =
10. 10.198 − 46 =
11. 11.55 − 47 =
12. 12.557 − 39 =
13. 13.136 − 58 =
14. 14.355 − 58 =
15. 15.345 − 66 =
16. 16.122 − 18 =
17. 17.221 − 97 =
18. 18.305 − 76 =
19. 19.154 − 29 =
20. 20.156 − 19 =
21. 21.365 − 37 =
22. 22.129 − 39 =
23. 23.472 − 97 =
24. 24.316 − 96 =
25. 25.213 − 86 =
26. 26.82 − 79 =
27. 27.168 − 39 =
28. 28.440 − 26 =
29. 29.260 − 78 =
30. 30.270 − 76 =
31. 31.211 − 46 =
32. 32.282 − 26 =
33. 33.263 − 49 =
34. 34.272 − 76 =
35. 35.138 − 37 =
36. 36.239 − 77 =
37. 37.462 − 37 =
38. 38.554 − 66 =
39. 39.237 − 58 =
40. 40.148 − 49 =

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