Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 496 · 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. 1.115 − 39 =
2. 2.122 − 89 =
3. 3.301 − 76 =
4. 4.52 − 36 =
5. 5.520 − 47 =
6. 6.387 − 66 =
7. 7.95 − 56 =
8. 8.131 − 48 =
9. 9.166 − 98 =
10. 10.337 − 16 =
11. 11.418 − 18 =
12. 12.234 − 38 =
13. 13.55 − 47 =
14. 14.478 − 86 =
15. 15.92 − 86 =
16. 16.276 − 57 =
17. 17.480 − 77 =
18. 18.585 − 48 =
19. 19.206 − 36 =
20. 20.489 − 59 =
21. 21.356 − 76 =
22. 22.209 − 76 =
23. 23.372 − 77 =
24. 24.301 − 49 =
25. 25.424 − 78 =
26. 26.550 − 87 =
27. 27.165 − 49 =
28. 28.483 − 89 =
29. 29.321 − 66 =
30. 30.417 − 37 =
31. 31.449 − 77 =
32. 32.313 − 36 =
33. 33.553 − 18 =
34. 34.156 − 96 =
35. 35.434 − 96 =
36. 36.159 − 57 =
37. 37.243 − 68 =
38. 38.147 − 48 =
39. 39.332 − 76 =
40. 40.179 − 68 =

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