Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 398 · 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. 1.424 − 16 =
2. 2.181 − 77 =
3. 3.290 − 76 =
4. 4.571 − 69 =
5. 5.273 − 37 =
6. 6.315 − 37 =
7. 7.460 − 38 =
8. 8.165 − 28 =
9. 9.373 − 88 =
10. 10.142 − 27 =
11. 11.178 − 97 =
12. 12.579 − 79 =
13. 13.99 − 17 =
14. 14.517 − 37 =
15. 15.290 − 26 =
16. 16.458 − 27 =
17. 17.571 − 89 =
18. 18.338 − 28 =
19. 19.530 − 19 =
20. 20.294 − 66 =
21. 21.395 − 56 =
22. 22.259 − 37 =
23. 23.100 − 16 =
24. 24.413 − 47 =
25. 25.459 − 47 =
26. 26.125 − 38 =
27. 27.213 − 87 =
28. 28.377 − 27 =
29. 29.452 − 86 =
30. 30.300 − 16 =
31. 31.454 − 38 =
32. 32.300 − 39 =
33. 33.577 − 29 =
34. 34.283 − 57 =
35. 35.161 − 87 =
36. 36.387 − 56 =
37. 37.212 − 27 =
38. 38.265 − 38 =
39. 39.538 − 79 =
40. 40.217 − 59 =

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