Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 571 · 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. 1.490 − 26 =
2. 2.387 − 59 =
3. 3.486 − 98 =
4. 4.175 − 98 =
5. 5.294 − 79 =
6. 6.117 − 57 =
7. 7.320 − 38 =
8. 8.174 − 29 =
9. 9.450 − 56 =
10. 10.237 − 88 =
11. 11.535 − 36 =
12. 12.256 − 69 =
13. 13.189 − 36 =
14. 14.421 − 99 =
15. 15.383 − 16 =
16. 16.172 − 38 =
17. 17.548 − 28 =
18. 18.304 − 28 =
19. 19.115 − 16 =
20. 20.441 − 27 =
21. 21.98 − 76 =
22. 22.535 − 18 =
23. 23.219 − 86 =
24. 24.173 − 26 =
25. 25.462 − 26 =
26. 26.224 − 89 =
27. 27.493 − 26 =
28. 28.250 − 86 =
29. 29.577 − 39 =
30. 30.276 − 67 =
31. 31.437 − 69 =
32. 32.127 − 37 =
33. 33.402 − 26 =
34. 34.342 − 17 =
35. 35.478 − 38 =
36. 36.448 − 99 =
37. 37.360 − 17 =
38. 38.246 − 29 =
39. 39.146 − 26 =
40. 40.339 − 19 =

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