Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 477 · 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. 1.489 − 38 =
2. 2.535 − 79 =
3. 3.288 − 88 =
4. 4.311 − 37 =
5. 5.419 − 98 =
6. 6.314 − 86 =
7. 7.82 − 47 =
8. 8.68 − 48 =
9. 9.157 − 78 =
10. 10.514 − 17 =
11. 11.191 − 99 =
12. 12.91 − 57 =
13. 13.205 − 28 =
14. 14.577 − 28 =
15. 15.106 − 66 =
16. 16.338 − 97 =
17. 17.549 − 37 =
18. 18.265 − 59 =
19. 19.324 − 56 =
20. 20.265 − 76 =
21. 21.187 − 38 =
22. 22.341 − 29 =
23. 23.507 − 77 =
24. 24.184 − 86 =
25. 25.306 − 88 =
26. 26.457 − 78 =
27. 27.165 − 48 =
28. 28.122 − 78 =
29. 29.72 − 67 =
30. 30.198 − 88 =
31. 31.566 − 16 =
32. 32.239 − 27 =
33. 33.324 − 17 =
34. 34.369 − 88 =
35. 35.492 − 28 =
36. 36.148 − 69 =
37. 37.93 − 78 =
38. 38.348 − 86 =
39. 39.426 − 78 =
40. 40.157 − 96 =

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