Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 766 · 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. 1.336 − 87 =
2. 2.462 − 27 =
3. 3.416 − 67 =
4. 4.287 − 37 =
5. 5.461 − 47 =
6. 6.445 − 69 =
7. 7.586 − 68 =
8. 8.317 − 38 =
9. 9.486 − 76 =
10. 10.463 − 77 =
11. 11.224 − 69 =
12. 12.192 − 48 =
13. 13.288 − 69 =
14. 14.133 − 96 =
15. 15.346 − 47 =
16. 16.517 − 76 =
17. 17.482 − 77 =
18. 18.282 − 96 =
19. 19.319 − 27 =
20. 20.443 − 19 =
21. 21.516 − 87 =
22. 22.131 − 46 =
23. 23.132 − 76 =
24. 24.172 − 26 =
25. 25.114 − 79 =
26. 26.361 − 49 =
27. 27.218 − 47 =
28. 28.479 − 36 =
29. 29.283 − 67 =
30. 30.420 − 38 =
31. 31.433 − 59 =
32. 32.477 − 36 =
33. 33.149 − 37 =
34. 34.377 − 66 =
35. 35.86 − 47 =
36. 36.381 − 57 =
37. 37.200 − 49 =
38. 38.546 − 99 =
39. 39.347 − 29 =
40. 40.474 − 97 =

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