Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 236 · 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. 1.238 − 17 =
2. 2.221 − 89 =
3. 3.60 − 29 =
4. 4.406 − 69 =
5. 5.317 − 57 =
6. 6.289 − 26 =
7. 7.258 − 59 =
8. 8.410 − 48 =
9. 9.194 − 46 =
10. 10.388 − 16 =
11. 11.171 − 68 =
12. 12.273 − 17 =
13. 13.163 − 96 =
14. 14.200 − 48 =
15. 15.515 − 47 =
16. 16.314 − 26 =
17. 17.331 − 76 =
18. 18.252 − 66 =
19. 19.187 − 29 =
20. 20.523 − 96 =
21. 21.172 − 96 =
22. 22.462 − 58 =
23. 23.522 − 89 =
24. 24.491 − 28 =
25. 25.579 − 46 =
26. 26.191 − 38 =
27. 27.114 − 47 =
28. 28.111 − 86 =
29. 29.529 − 38 =
30. 30.211 − 97 =
31. 31.584 − 38 =
32. 32.402 − 28 =
33. 33.330 − 26 =
34. 34.282 − 66 =
35. 35.488 − 36 =
36. 36.476 − 86 =
37. 37.548 − 79 =
38. 38.448 − 88 =
39. 39.124 − 28 =
40. 40.326 − 96 =

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