Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 709 · 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. 1.263 − 67 =
2. 2.391 − 46 =
3. 3.228 − 57 =
4. 4.246 − 28 =
5. 5.518 − 39 =
6. 6.487 − 46 =
7. 7.385 − 86 =
8. 8.365 − 49 =
9. 9.56 − 17 =
10. 10.389 − 17 =
11. 11.297 − 87 =
12. 12.400 − 58 =
13. 13.323 − 49 =
14. 14.129 − 86 =
15. 15.369 − 78 =
16. 16.288 − 96 =
17. 17.537 − 26 =
18. 18.396 − 29 =
19. 19.463 − 16 =
20. 20.314 − 16 =
21. 21.574 − 86 =
22. 22.580 − 28 =
23. 23.83 − 68 =
24. 24.464 − 56 =
25. 25.536 − 29 =
26. 26.527 − 67 =
27. 27.227 − 97 =
28. 28.597 − 48 =
29. 29.122 − 36 =
30. 30.70 − 19 =
31. 31.280 − 46 =
32. 32.112 − 39 =
33. 33.407 − 47 =
34. 34.448 − 39 =
35. 35.313 − 46 =
36. 36.453 − 88 =
37. 37.339 − 29 =
38. 38.232 − 28 =
39. 39.152 − 89 =
40. 40.332 − 66 =

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