Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 69 · 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. 1.520 − 27 =
2. 2.436 − 69 =
3. 3.114 − 27 =
4. 4.65 − 16 =
5. 5.160 − 78 =
6. 6.192 − 59 =
7. 7.285 − 39 =
8. 8.440 − 29 =
9. 9.437 − 69 =
10. 10.74 − 18 =
11. 11.235 − 67 =
12. 12.228 − 27 =
13. 13.308 − 38 =
14. 14.162 − 58 =
15. 15.361 − 67 =
16. 16.197 − 86 =
17. 17.532 − 37 =
18. 18.587 − 68 =
19. 19.308 − 77 =
20. 20.387 − 38 =
21. 21.127 − 77 =
22. 22.391 − 46 =
23. 23.172 − 99 =
24. 24.478 − 39 =
25. 25.487 − 88 =
26. 26.490 − 66 =
27. 27.531 − 97 =
28. 28.465 − 89 =
29. 29.434 − 26 =
30. 30.516 − 26 =
31. 31.125 − 28 =
32. 32.392 − 96 =
33. 33.165 − 88 =
34. 34.507 − 97 =
35. 35.180 − 18 =
36. 36.527 − 19 =
37. 37.177 − 96 =
38. 38.430 − 78 =
39. 39.337 − 47 =
40. 40.358 − 26 =

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