Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 515 · 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. 1.116 − 39 =
2. 2.406 − 29 =
3. 3.92 − 76 =
4. 4.339 − 76 =
5. 5.487 − 56 =
6. 6.564 − 48 =
7. 7.327 − 68 =
8. 8.288 − 98 =
9. 9.429 − 16 =
10. 10.289 − 18 =
11. 11.539 − 96 =
12. 12.348 − 59 =
13. 13.365 − 56 =
14. 14.180 − 19 =
15. 15.187 − 59 =
16. 16.326 − 56 =
17. 17.136 − 78 =
18. 18.453 − 16 =
19. 19.530 − 37 =
20. 20.468 − 86 =
21. 21.170 − 86 =
22. 22.296 − 56 =
23. 23.148 − 88 =
24. 24.210 − 59 =
25. 25.120 − 88 =
26. 26.534 − 16 =
27. 27.108 − 46 =
28. 28.241 − 96 =
29. 29.176 − 79 =
30. 30.591 − 96 =
31. 31.374 − 79 =
32. 32.269 − 89 =
33. 33.133 − 17 =
34. 34.341 − 66 =
35. 35.429 − 16 =
36. 36.557 − 18 =
37. 37.410 − 59 =
38. 38.457 − 96 =
39. 39.527 − 86 =
40. 40.463 − 69 =

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