Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 706 · 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. 1.168 − 16 =
2. 2.588 − 36 =
3. 3.439 − 19 =
4. 4.458 − 19 =
5. 5.487 − 26 =
6. 6.568 − 56 =
7. 7.169 − 16 =
8. 8.411 − 88 =
9. 9.567 − 88 =
10. 10.133 − 98 =
11. 11.143 − 59 =
12. 12.159 − 88 =
13. 13.563 − 47 =
14. 14.497 − 38 =
15. 15.139 − 36 =
16. 16.204 − 96 =
17. 17.249 − 19 =
18. 18.519 − 67 =
19. 19.154 − 86 =
20. 20.101 − 37 =
21. 21.180 − 97 =
22. 22.479 − 26 =
23. 23.448 − 58 =
24. 24.189 − 87 =
25. 25.217 − 66 =
26. 26.171 − 39 =
27. 27.170 − 26 =
28. 28.195 − 18 =
29. 29.291 − 16 =
30. 30.563 − 26 =
31. 31.139 − 29 =
32. 32.478 − 99 =
33. 33.458 − 89 =
34. 34.383 − 77 =
35. 35.361 − 57 =
36. 36.408 − 27 =
37. 37.150 − 88 =
38. 38.267 − 98 =
39. 39.371 − 36 =
40. 40.587 − 78 =

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