Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 325 · 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. 1.537 − 36 =
2. 2.263 − 47 =
3. 3.565 − 86 =
4. 4.197 − 46 =
5. 5.457 − 26 =
6. 6.523 − 76 =
7. 7.89 − 77 =
8. 8.152 − 69 =
9. 9.84 − 16 =
10. 10.223 − 67 =
11. 11.126 − 16 =
12. 12.334 − 89 =
13. 13.324 − 59 =
14. 14.91 − 67 =
15. 15.599 − 36 =
16. 16.427 − 96 =
17. 17.597 − 59 =
18. 18.70 − 26 =
19. 19.197 − 69 =
20. 20.86 − 36 =
21. 21.155 − 69 =
22. 22.283 − 29 =
23. 23.191 − 48 =
24. 24.383 − 66 =
25. 25.168 − 76 =
26. 26.265 − 99 =
27. 27.92 − 46 =
28. 28.507 − 16 =
29. 29.297 − 46 =
30. 30.103 − 49 =
31. 31.488 − 66 =
32. 32.86 − 18 =
33. 33.293 − 66 =
34. 34.285 − 86 =
35. 35.512 − 29 =
36. 36.242 − 77 =
37. 37.297 − 89 =
38. 38.280 − 88 =
39. 39.546 − 46 =
40. 40.467 − 89 =

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