Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 863 · 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. 1.519 − 39 =
2. 2.277 − 46 =
3. 3.249 − 16 =
4. 4.593 − 89 =
5. 5.213 − 27 =
6. 6.456 − 18 =
7. 7.167 − 86 =
8. 8.170 − 28 =
9. 9.469 − 46 =
10. 10.222 − 29 =
11. 11.438 − 27 =
12. 12.135 − 39 =
13. 13.231 − 36 =
14. 14.285 − 89 =
15. 15.573 − 39 =
16. 16.554 − 69 =
17. 17.68 − 58 =
18. 18.143 − 89 =
19. 19.381 − 16 =
20. 20.276 − 76 =
21. 21.143 − 26 =
22. 22.595 − 18 =
23. 23.455 − 36 =
24. 24.126 − 36 =
25. 25.118 − 98 =
26. 26.99 − 67 =
27. 27.397 − 76 =
28. 28.217 − 16 =
29. 29.450 − 68 =
30. 30.68 − 26 =
31. 31.448 − 39 =
32. 32.350 − 79 =
33. 33.237 − 17 =
34. 34.561 − 16 =
35. 35.360 − 59 =
36. 36.471 − 39 =
37. 37.464 − 16 =
38. 38.180 − 36 =
39. 39.110 − 99 =
40. 40.231 − 27 =

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