Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 618 · 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. 1.492 − 66 =
2. 2.403 − 29 =
3. 3.192 − 48 =
4. 4.257 − 58 =
5. 5.211 − 89 =
6. 6.485 − 26 =
7. 7.280 − 88 =
8. 8.385 − 97 =
9. 9.438 − 27 =
10. 10.584 − 68 =
11. 11.385 − 69 =
12. 12.315 − 17 =
13. 13.369 − 59 =
14. 14.447 − 38 =
15. 15.306 − 96 =
16. 16.82 − 66 =
17. 17.445 − 69 =
18. 18.103 − 18 =
19. 19.356 − 78 =
20. 20.315 − 16 =
21. 21.568 − 16 =
22. 22.425 − 38 =
23. 23.557 − 99 =
24. 24.54 − 39 =
25. 25.343 − 89 =
26. 26.177 − 56 =
27. 27.166 − 78 =
28. 28.271 − 28 =
29. 29.246 − 28 =
30. 30.149 − 69 =
31. 31.216 − 36 =
32. 32.495 − 49 =
33. 33.317 − 99 =
34. 34.291 − 86 =
35. 35.452 − 69 =
36. 36.459 − 38 =
37. 37.157 − 87 =
38. 38.92 − 17 =
39. 39.475 − 26 =
40. 40.155 − 76 =

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