Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 698 · 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. 1.137 − 56 =
2. 2.85 − 56 =
3. 3.69 − 37 =
4. 4.579 − 69 =
5. 5.410 − 76 =
6. 6.358 − 77 =
7. 7.110 − 97 =
8. 8.263 − 19 =
9. 9.97 − 58 =
10. 10.106 − 58 =
11. 11.363 − 76 =
12. 12.399 − 19 =
13. 13.525 − 79 =
14. 14.250 − 67 =
15. 15.351 − 96 =
16. 16.327 − 56 =
17. 17.279 − 28 =
18. 18.438 − 59 =
19. 19.419 − 37 =
20. 20.504 − 88 =
21. 21.380 − 19 =
22. 22.198 − 37 =
23. 23.443 − 38 =
24. 24.493 − 46 =
25. 25.541 − 16 =
26. 26.238 − 29 =
27. 27.175 − 49 =
28. 28.336 − 28 =
29. 29.154 − 57 =
30. 30.133 − 67 =
31. 31.82 − 28 =
32. 32.381 − 97 =
33. 33.182 − 37 =
34. 34.100 − 36 =
35. 35.182 − 39 =
36. 36.268 − 56 =
37. 37.388 − 17 =
38. 38.160 − 79 =
39. 39.111 − 77 =
40. 40.426 − 86 =

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