Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 591 · 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. 1.234 − 78 =
2. 2.335 − 39 =
3. 3.553 − 56 =
4. 4.170 − 39 =
5. 5.163 − 16 =
6. 6.235 − 56 =
7. 7.470 − 36 =
8. 8.131 − 58 =
9. 9.142 − 18 =
10. 10.308 − 96 =
11. 11.474 − 86 =
12. 12.586 − 27 =
13. 13.181 − 66 =
14. 14.425 − 18 =
15. 15.596 − 79 =
16. 16.535 − 46 =
17. 17.199 − 97 =
18. 18.448 − 78 =
19. 19.397 − 39 =
20. 20.347 − 37 =
21. 21.171 − 17 =
22. 22.586 − 39 =
23. 23.546 − 37 =
24. 24.99 − 58 =
25. 25.530 − 79 =
26. 26.518 − 79 =
27. 27.138 − 16 =
28. 28.513 − 37 =
29. 29.267 − 58 =
30. 30.210 − 88 =
31. 31.409 − 26 =
32. 32.207 − 97 =
33. 33.246 − 56 =
34. 34.228 − 87 =
35. 35.320 − 77 =
36. 36.533 − 56 =
37. 37.412 − 46 =
38. 38.185 − 66 =
39. 39.440 − 29 =
40. 40.121 − 36 =

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