Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 704 · 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. 1.544 − 89 =
2. 2.499 − 58 =
3. 3.309 − 29 =
4. 4.586 − 96 =
5. 5.393 − 17 =
6. 6.260 − 79 =
7. 7.502 − 77 =
8. 8.97 − 16 =
9. 9.538 − 67 =
10. 10.483 − 38 =
11. 11.127 − 49 =
12. 12.509 − 76 =
13. 13.556 − 37 =
14. 14.556 − 57 =
15. 15.59 − 28 =
16. 16.567 − 47 =
17. 17.161 − 66 =
18. 18.175 − 27 =
19. 19.212 − 78 =
20. 20.495 − 88 =
21. 21.543 − 39 =
22. 22.244 − 47 =
23. 23.65 − 27 =
24. 24.296 − 46 =
25. 25.412 − 89 =
26. 26.451 − 26 =
27. 27.446 − 26 =
28. 28.232 − 59 =
29. 29.56 − 49 =
30. 30.98 − 47 =
31. 31.173 − 29 =
32. 32.450 − 47 =
33. 33.414 − 16 =
34. 34.298 − 99 =
35. 35.582 − 47 =
36. 36.348 − 68 =
37. 37.198 − 99 =
38. 38.157 − 69 =
39. 39.470 − 37 =
40. 40.140 − 76 =

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