Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 598 · 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. 1.372 − 27 =
2. 2.536 − 46 =
3. 3.414 − 86 =
4. 4.442 − 48 =
5. 5.335 − 19 =
6. 6.482 − 77 =
7. 7.288 − 56 =
8. 8.186 − 39 =
9. 9.355 − 96 =
10. 10.197 − 89 =
11. 11.226 − 19 =
12. 12.169 − 38 =
13. 13.598 − 96 =
14. 14.169 − 66 =
15. 15.304 − 28 =
16. 16.101 − 57 =
17. 17.331 − 76 =
18. 18.428 − 48 =
19. 19.246 − 98 =
20. 20.211 − 18 =
21. 21.188 − 46 =
22. 22.130 − 18 =
23. 23.478 − 86 =
24. 24.199 − 59 =
25. 25.284 − 89 =
26. 26.365 − 17 =
27. 27.192 − 98 =
28. 28.447 − 36 =
29. 29.156 − 46 =
30. 30.128 − 16 =
31. 31.159 − 48 =
32. 32.547 − 86 =
33. 33.221 − 69 =
34. 34.485 − 48 =
35. 35.591 − 49 =
36. 36.440 − 66 =
37. 37.406 − 26 =
38. 38.338 − 97 =
39. 39.152 − 97 =
40. 40.394 − 59 =

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