Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 864 · 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. 1.113 − 36 =
2. 2.178 − 69 =
3. 3.584 − 19 =
4. 4.578 − 97 =
5. 5.537 − 49 =
6. 6.133 − 18 =
7. 7.287 − 19 =
8. 8.106 − 28 =
9. 9.123 − 77 =
10. 10.286 − 57 =
11. 11.526 − 79 =
12. 12.595 − 29 =
13. 13.401 − 77 =
14. 14.403 − 99 =
15. 15.135 − 38 =
16. 16.481 − 19 =
17. 17.100 − 66 =
18. 18.310 − 39 =
19. 19.317 − 29 =
20. 20.511 − 99 =
21. 21.152 − 59 =
22. 22.258 − 78 =
23. 23.520 − 38 =
24. 24.159 − 58 =
25. 25.586 − 66 =
26. 26.110 − 69 =
27. 27.487 − 88 =
28. 28.183 − 16 =
29. 29.203 − 96 =
30. 30.262 − 46 =
31. 31.88 − 36 =
32. 32.532 − 36 =
33. 33.440 − 96 =
34. 34.78 − 37 =
35. 35.163 − 57 =
36. 36.456 − 99 =
37. 37.410 − 47 =
38. 38.276 − 17 =
39. 39.523 − 96 =
40. 40.182 − 86 =

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