Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 222 · 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. 1.584 − 18 =
2. 2.109 − 77 =
3. 3.553 − 18 =
4. 4.159 − 49 =
5. 5.156 − 38 =
6. 6.543 − 18 =
7. 7.572 − 29 =
8. 8.238 − 87 =
9. 9.236 − 27 =
10. 10.185 − 96 =
11. 11.494 − 26 =
12. 12.237 − 58 =
13. 13.456 − 98 =
14. 14.382 − 69 =
15. 15.167 − 87 =
16. 16.231 − 39 =
17. 17.195 − 99 =
18. 18.297 − 39 =
19. 19.402 − 96 =
20. 20.143 − 18 =
21. 21.200 − 98 =
22. 22.398 − 77 =
23. 23.234 − 26 =
24. 24.313 − 47 =
25. 25.263 − 26 =
26. 26.569 − 18 =
27. 27.331 − 88 =
28. 28.416 − 38 =
29. 29.62 − 26 =
30. 30.362 − 78 =
31. 31.195 − 57 =
32. 32.173 − 26 =
33. 33.192 − 97 =
34. 34.403 − 68 =
35. 35.188 − 36 =
36. 36.332 − 17 =
37. 37.156 − 78 =
38. 38.505 − 38 =
39. 39.133 − 28 =
40. 40.65 − 46 =

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