Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 840 · 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. 1.538 − 26 =
2. 2.231 − 46 =
3. 3.403 − 88 =
4. 4.69 − 59 =
5. 5.533 − 48 =
6. 6.418 − 39 =
7. 7.504 − 38 =
8. 8.209 − 49 =
9. 9.283 − 67 =
10. 10.276 − 96 =
11. 11.197 − 38 =
12. 12.200 − 87 =
13. 13.243 − 37 =
14. 14.172 − 67 =
15. 15.333 − 78 =
16. 16.584 − 46 =
17. 17.165 − 66 =
18. 18.59 − 16 =
19. 19.590 − 46 =
20. 20.553 − 99 =
21. 21.243 − 19 =
22. 22.276 − 19 =
23. 23.514 − 18 =
24. 24.244 − 79 =
25. 25.412 − 19 =
26. 26.328 − 48 =
27. 27.421 − 26 =
28. 28.193 − 69 =
29. 29.122 − 87 =
30. 30.280 − 19 =
31. 31.257 − 99 =
32. 32.247 − 59 =
33. 33.570 − 96 =
34. 34.161 − 17 =
35. 35.284 − 26 =
36. 36.447 − 76 =
37. 37.333 − 69 =
38. 38.243 − 59 =
39. 39.578 − 48 =
40. 40.180 − 79 =

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