Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 61 · 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. 1.98 − 77 =
2. 2.122 − 26 =
3. 3.483 − 88 =
4. 4.260 − 19 =
5. 5.170 − 77 =
6. 6.542 − 26 =
7. 7.198 − 87 =
8. 8.171 − 66 =
9. 9.287 − 27 =
10. 10.226 − 58 =
11. 11.588 − 56 =
12. 12.494 − 18 =
13. 13.559 − 78 =
14. 14.171 − 76 =
15. 15.508 − 17 =
16. 16.457 − 49 =
17. 17.455 − 39 =
18. 18.329 − 57 =
19. 19.245 − 28 =
20. 20.152 − 66 =
21. 21.172 − 37 =
22. 22.397 − 16 =
23. 23.88 − 18 =
24. 24.118 − 58 =
25. 25.564 − 18 =
26. 26.595 − 19 =
27. 27.538 − 38 =
28. 28.156 − 27 =
29. 29.553 − 16 =
30. 30.122 − 36 =
31. 31.430 − 58 =
32. 32.448 − 16 =
33. 33.160 − 36 =
34. 34.458 − 98 =
35. 35.536 − 78 =
36. 36.63 − 19 =
37. 37.514 − 87 =
38. 38.124 − 57 =
39. 39.183 − 17 =
40. 40.378 − 27 =

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