Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 695 · 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. 1.54 − 27 =
2. 2.171 − 48 =
3. 3.250 − 58 =
4. 4.509 − 29 =
5. 5.377 − 59 =
6. 6.170 − 48 =
7. 7.452 − 18 =
8. 8.410 − 88 =
9. 9.447 − 87 =
10. 10.227 − 86 =
11. 11.414 − 76 =
12. 12.539 − 86 =
13. 13.334 − 17 =
14. 14.250 − 68 =
15. 15.565 − 56 =
16. 16.105 − 37 =
17. 17.85 − 66 =
18. 18.527 − 36 =
19. 19.410 − 28 =
20. 20.169 − 79 =
21. 21.357 − 36 =
22. 22.340 − 16 =
23. 23.237 − 89 =
24. 24.529 − 58 =
25. 25.257 − 87 =
26. 26.237 − 76 =
27. 27.163 − 98 =
28. 28.273 − 36 =
29. 29.501 − 17 =
30. 30.299 − 88 =
31. 31.553 − 16 =
32. 32.390 − 36 =
33. 33.505 − 29 =
34. 34.213 − 39 =
35. 35.204 − 86 =
36. 36.103 − 36 =
37. 37.571 − 56 =
38. 38.221 − 36 =
39. 39.452 − 46 =
40. 40.319 − 78 =

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