Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 366 · 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. 1.568 − 57 =
2. 2.384 − 86 =
3. 3.267 − 47 =
4. 4.138 − 68 =
5. 5.498 − 86 =
6. 6.141 − 99 =
7. 7.105 − 87 =
8. 8.507 − 76 =
9. 9.136 − 37 =
10. 10.472 − 39 =
11. 11.289 − 97 =
12. 12.484 − 47 =
13. 13.394 − 57 =
14. 14.402 − 18 =
15. 15.570 − 96 =
16. 16.359 − 58 =
17. 17.76 − 56 =
18. 18.68 − 17 =
19. 19.438 − 27 =
20. 20.430 − 46 =
21. 21.312 − 36 =
22. 22.417 − 76 =
23. 23.536 − 36 =
24. 24.533 − 77 =
25. 25.299 − 87 =
26. 26.287 − 89 =
27. 27.272 − 96 =
28. 28.388 − 58 =
29. 29.187 − 18 =
30. 30.521 − 88 =
31. 31.86 − 26 =
32. 32.66 − 46 =
33. 33.563 − 57 =
34. 34.262 − 27 =
35. 35.261 − 26 =
36. 36.176 − 36 =
37. 37.462 − 76 =
38. 38.305 − 49 =
39. 39.415 − 78 =
40. 40.546 − 26 =

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