Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 563 · 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. 1.463 − 87 =
2. 2.440 − 57 =
3. 3.119 − 67 =
4. 4.479 − 59 =
5. 5.233 − 39 =
6. 6.493 − 46 =
7. 7.226 − 79 =
8. 8.494 − 88 =
9. 9.417 − 56 =
10. 10.248 − 57 =
11. 11.265 − 89 =
12. 12.88 − 47 =
13. 13.107 − 69 =
14. 14.341 − 56 =
15. 15.121 − 29 =
16. 16.510 − 68 =
17. 17.393 − 19 =
18. 18.99 − 49 =
19. 19.106 − 48 =
20. 20.363 − 68 =
21. 21.222 − 97 =
22. 22.181 − 68 =
23. 23.197 − 66 =
24. 24.84 − 38 =
25. 25.459 − 39 =
26. 26.508 − 97 =
27. 27.192 − 97 =
28. 28.240 − 56 =
29. 29.143 − 37 =
30. 30.194 − 37 =
31. 31.496 − 18 =
32. 32.198 − 99 =
33. 33.73 − 46 =
34. 34.465 − 67 =
35. 35.540 − 57 =
36. 36.168 − 66 =
37. 37.524 − 69 =
38. 38.281 − 88 =
39. 39.140 − 26 =
40. 40.133 − 86 =

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