Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 170 · 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. 1.397 − 88 =
2. 2.503 − 56 =
3. 3.468 − 79 =
4. 4.580 − 37 =
5. 5.146 − 77 =
6. 6.363 − 27 =
7. 7.388 − 77 =
8. 8.160 − 89 =
9. 9.508 − 86 =
10. 10.492 − 46 =
11. 11.437 − 26 =
12. 12.533 − 99 =
13. 13.203 − 18 =
14. 14.528 − 86 =
15. 15.111 − 16 =
16. 16.244 − 98 =
17. 17.177 − 77 =
18. 18.88 − 16 =
19. 19.405 − 26 =
20. 20.291 − 59 =
21. 21.593 − 78 =
22. 22.323 − 17 =
23. 23.352 − 78 =
24. 24.542 − 46 =
25. 25.241 − 58 =
26. 26.169 − 57 =
27. 27.353 − 36 =
28. 28.192 − 59 =
29. 29.359 − 76 =
30. 30.188 − 59 =
31. 31.286 − 17 =
32. 32.109 − 57 =
33. 33.382 − 87 =
34. 34.416 − 46 =
35. 35.121 − 17 =
36. 36.441 − 26 =
37. 37.481 − 47 =
38. 38.68 − 48 =
39. 39.212 − 79 =
40. 40.360 − 17 =

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