Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 355 · 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. 1.579 − 16 =
2. 2.140 − 76 =
3. 3.231 − 99 =
4. 4.316 − 87 =
5. 5.285 − 49 =
6. 6.353 − 38 =
7. 7.127 − 86 =
8. 8.543 − 29 =
9. 9.410 − 37 =
10. 10.405 − 77 =
11. 11.533 − 47 =
12. 12.266 − 59 =
13. 13.413 − 86 =
14. 14.491 − 99 =
15. 15.369 − 86 =
16. 16.148 − 67 =
17. 17.180 − 79 =
18. 18.481 − 77 =
19. 19.244 − 47 =
20. 20.84 − 66 =
21. 21.263 − 27 =
22. 22.415 − 68 =
23. 23.352 − 59 =
24. 24.404 − 87 =
25. 25.549 − 67 =
26. 26.439 − 96 =
27. 27.474 − 27 =
28. 28.227 − 27 =
29. 29.412 − 68 =
30. 30.168 − 97 =
31. 31.386 − 16 =
32. 32.528 − 66 =
33. 33.478 − 48 =
34. 34.337 − 17 =
35. 35.376 − 46 =
36. 36.279 − 59 =
37. 37.170 − 27 =
38. 38.498 − 89 =
39. 39.554 − 49 =
40. 40.56 − 47 =

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