Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 687 · 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. 1.120 − 46 =
2. 2.435 − 79 =
3. 3.327 − 19 =
4. 4.181 − 97 =
5. 5.194 − 76 =
6. 6.161 − 18 =
7. 7.102 − 17 =
8. 8.131 − 96 =
9. 9.514 − 67 =
10. 10.97 − 46 =
11. 11.393 − 36 =
12. 12.540 − 49 =
13. 13.399 − 18 =
14. 14.316 − 17 =
15. 15.133 − 76 =
16. 16.164 − 57 =
17. 17.574 − 66 =
18. 18.268 − 38 =
19. 19.296 − 97 =
20. 20.465 − 49 =
21. 21.160 − 66 =
22. 22.527 − 27 =
23. 23.552 − 16 =
24. 24.239 − 56 =
25. 25.474 − 89 =
26. 26.389 − 48 =
27. 27.468 − 67 =
28. 28.389 − 57 =
29. 29.523 − 37 =
30. 30.413 − 68 =
31. 31.526 − 26 =
32. 32.332 − 49 =
33. 33.499 − 88 =
34. 34.94 − 78 =
35. 35.306 − 29 =
36. 36.563 − 98 =
37. 37.367 − 76 =
38. 38.430 − 19 =
39. 39.268 − 97 =
40. 40.595 − 99 =

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