Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 184 · 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. 1.52 − 18 =
2. 2.229 − 76 =
3. 3.96 − 38 =
4. 4.441 − 98 =
5. 5.459 − 18 =
6. 6.310 − 99 =
7. 7.150 − 18 =
8. 8.91 − 58 =
9. 9.435 − 19 =
10. 10.390 − 18 =
11. 11.482 − 76 =
12. 12.52 − 26 =
13. 13.548 − 78 =
14. 14.526 − 28 =
15. 15.179 − 79 =
16. 16.569 − 49 =
17. 17.260 − 76 =
18. 18.311 − 58 =
19. 19.474 − 66 =
20. 20.410 − 38 =
21. 21.272 − 39 =
22. 22.276 − 26 =
23. 23.249 − 57 =
24. 24.291 − 19 =
25. 25.354 − 97 =
26. 26.462 − 76 =
27. 27.135 − 97 =
28. 28.264 − 36 =
29. 29.236 − 49 =
30. 30.511 − 77 =
31. 31.240 − 87 =
32. 32.124 − 79 =
33. 33.109 − 97 =
34. 34.418 − 98 =
35. 35.578 − 68 =
36. 36.267 − 58 =
37. 37.440 − 97 =
38. 38.142 − 97 =
39. 39.455 − 37 =
40. 40.406 − 58 =

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