Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 368 · 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. 1.566 − 38 =
2. 2.538 − 47 =
3. 3.361 − 36 =
4. 4.361 − 79 =
5. 5.503 − 36 =
6. 6.226 − 26 =
7. 7.454 − 19 =
8. 8.503 − 78 =
9. 9.161 − 86 =
10. 10.165 − 68 =
11. 11.340 − 37 =
12. 12.300 − 47 =
13. 13.316 − 68 =
14. 14.572 − 57 =
15. 15.199 − 78 =
16. 16.410 − 16 =
17. 17.467 − 59 =
18. 18.120 − 86 =
19. 19.262 − 29 =
20. 20.522 − 19 =
21. 21.597 − 26 =
22. 22.127 − 28 =
23. 23.474 − 28 =
24. 24.539 − 87 =
25. 25.513 − 56 =
26. 26.400 − 27 =
27. 27.274 − 39 =
28. 28.259 − 39 =
29. 29.457 − 86 =
30. 30.386 − 39 =
31. 31.158 − 96 =
32. 32.508 − 36 =
33. 33.549 − 19 =
34. 34.226 − 36 =
35. 35.506 − 48 =
36. 36.97 − 26 =
37. 37.120 − 28 =
38. 38.418 − 26 =
39. 39.68 − 27 =
40. 40.86 − 28 =

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