Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 221 · 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. 1.219 − 68 =
2. 2.370 − 27 =
3. 3.484 − 47 =
4. 4.369 − 29 =
5. 5.377 − 59 =
6. 6.160 − 66 =
7. 7.500 − 48 =
8. 8.512 − 29 =
9. 9.597 − 36 =
10. 10.460 − 77 =
11. 11.156 − 96 =
12. 12.238 − 99 =
13. 13.542 − 16 =
14. 14.212 − 56 =
15. 15.425 − 16 =
16. 16.310 − 28 =
17. 17.143 − 89 =
18. 18.564 − 87 =
19. 19.574 − 29 =
20. 20.205 − 16 =
21. 21.311 − 76 =
22. 22.409 − 27 =
23. 23.435 − 37 =
24. 24.548 − 66 =
25. 25.592 − 58 =
26. 26.446 − 17 =
27. 27.358 − 17 =
28. 28.96 − 47 =
29. 29.151 − 76 =
30. 30.470 − 29 =
31. 31.585 − 76 =
32. 32.150 − 18 =
33. 33.493 − 96 =
34. 34.404 − 36 =
35. 35.378 − 49 =
36. 36.363 − 69 =
37. 37.532 − 39 =
38. 38.564 − 99 =
39. 39.415 − 58 =
40. 40.162 − 46 =

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