Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 254 · 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. 1.261 − 87 =
2. 2.245 − 96 =
3. 3.193 − 27 =
4. 4.213 − 37 =
5. 5.271 − 97 =
6. 6.326 − 26 =
7. 7.395 − 16 =
8. 8.494 − 86 =
9. 9.199 − 67 =
10. 10.483 − 78 =
11. 11.218 − 18 =
12. 12.589 − 87 =
13. 13.472 − 59 =
14. 14.311 − 48 =
15. 15.98 − 49 =
16. 16.563 − 79 =
17. 17.210 − 76 =
18. 18.470 − 47 =
19. 19.133 − 27 =
20. 20.505 − 47 =
21. 21.422 − 19 =
22. 22.82 − 19 =
23. 23.352 − 67 =
24. 24.584 − 97 =
25. 25.194 − 39 =
26. 26.555 − 87 =
27. 27.452 − 27 =
28. 28.549 − 16 =
29. 29.595 − 27 =
30. 30.240 − 29 =
31. 31.472 − 87 =
32. 32.153 − 76 =
33. 33.105 − 56 =
34. 34.357 − 39 =
35. 35.402 − 57 =
36. 36.505 − 27 =
37. 37.86 − 16 =
38. 38.553 − 79 =
39. 39.289 − 67 =
40. 40.398 − 26 =

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