Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 71 · 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. 1.85 − 28 =
2. 2.201 − 48 =
3. 3.496 − 98 =
4. 4.490 − 76 =
5. 5.234 − 26 =
6. 6.546 − 46 =
7. 7.70 − 27 =
8. 8.157 − 27 =
9. 9.177 − 77 =
10. 10.408 − 96 =
11. 11.93 − 27 =
12. 12.459 − 38 =
13. 13.546 − 69 =
14. 14.184 − 16 =
15. 15.412 − 66 =
16. 16.281 − 56 =
17. 17.185 − 56 =
18. 18.574 − 47 =
19. 19.468 − 78 =
20. 20.443 − 28 =
21. 21.154 − 96 =
22. 22.301 − 28 =
23. 23.131 − 89 =
24. 24.365 − 47 =
25. 25.305 − 38 =
26. 26.264 − 97 =
27. 27.371 − 38 =
28. 28.353 − 79 =
29. 29.206 − 49 =
30. 30.332 − 26 =
31. 31.226 − 98 =
32. 32.295 − 46 =
33. 33.164 − 28 =
34. 34.246 − 39 =
35. 35.349 − 16 =
36. 36.122 − 59 =
37. 37.545 − 37 =
38. 38.575 − 36 =
39. 39.548 − 66 =
40. 40.574 − 67 =

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