Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 154 · 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. 1.422 − 86 =
2. 2.475 − 36 =
3. 3.222 − 37 =
4. 4.340 − 67 =
5. 5.82 − 67 =
6. 6.381 − 87 =
7. 7.506 − 57 =
8. 8.566 − 57 =
9. 9.89 − 27 =
10. 10.168 − 39 =
11. 11.424 − 16 =
12. 12.329 − 26 =
13. 13.518 − 79 =
14. 14.308 − 78 =
15. 15.345 − 26 =
16. 16.519 − 76 =
17. 17.230 − 97 =
18. 18.286 − 58 =
19. 19.385 − 86 =
20. 20.279 − 59 =
21. 21.316 − 57 =
22. 22.329 − 28 =
23. 23.290 − 37 =
24. 24.132 − 96 =
25. 25.132 − 58 =
26. 26.438 − 56 =
27. 27.54 − 16 =
28. 28.73 − 49 =
29. 29.382 − 49 =
30. 30.195 − 58 =
31. 31.89 − 56 =
32. 32.132 − 67 =
33. 33.115 − 77 =
34. 34.440 − 77 =
35. 35.522 − 86 =
36. 36.450 − 16 =
37. 37.375 − 29 =
38. 38.57 − 16 =
39. 39.442 − 86 =
40. 40.379 − 16 =

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