Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 655 · 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. 1.140 − 77 =
2. 2.415 − 89 =
3. 3.60 − 38 =
4. 4.505 − 99 =
5. 5.319 − 59 =
6. 6.283 − 76 =
7. 7.382 − 47 =
8. 8.466 − 59 =
9. 9.183 − 19 =
10. 10.235 − 28 =
11. 11.314 − 37 =
12. 12.289 − 46 =
13. 13.137 − 76 =
14. 14.365 − 19 =
15. 15.371 − 99 =
16. 16.223 − 48 =
17. 17.108 − 89 =
18. 18.429 − 89 =
19. 19.169 − 79 =
20. 20.153 − 76 =
21. 21.94 − 29 =
22. 22.408 − 66 =
23. 23.483 − 67 =
24. 24.298 − 49 =
25. 25.209 − 58 =
26. 26.280 − 26 =
27. 27.507 − 37 =
28. 28.583 − 26 =
29. 29.160 − 96 =
30. 30.366 − 37 =
31. 31.145 − 68 =
32. 32.101 − 38 =
33. 33.229 − 47 =
34. 34.229 − 98 =
35. 35.330 − 67 =
36. 36.566 − 57 =
37. 37.387 − 27 =
38. 38.160 − 98 =
39. 39.308 − 66 =
40. 40.297 − 96 =

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