Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 525 · 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. 1.80 − 76 =
2. 2.131 − 96 =
3. 3.340 − 37 =
4. 4.447 − 26 =
5. 5.132 − 96 =
6. 6.218 − 17 =
7. 7.599 − 19 =
8. 8.592 − 87 =
9. 9.342 − 39 =
10. 10.126 − 17 =
11. 11.222 − 47 =
12. 12.66 − 16 =
13. 13.235 − 89 =
14. 14.347 − 56 =
15. 15.379 − 97 =
16. 16.202 − 86 =
17. 17.311 − 66 =
18. 18.573 − 67 =
19. 19.217 − 96 =
20. 20.311 − 18 =
21. 21.450 − 86 =
22. 22.320 − 47 =
23. 23.154 − 19 =
24. 24.382 − 98 =
25. 25.565 − 88 =
26. 26.508 − 96 =
27. 27.394 − 27 =
28. 28.152 − 77 =
29. 29.245 − 28 =
30. 30.486 − 38 =
31. 31.564 − 16 =
32. 32.188 − 29 =
33. 33.118 − 59 =
34. 34.472 − 49 =
35. 35.410 − 79 =
36. 36.427 − 39 =
37. 37.580 − 68 =
38. 38.86 − 69 =
39. 39.347 − 38 =
40. 40.254 − 27 =

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