Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 408 · 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. 1.367 − 99 =
2. 2.519 − 28 =
3. 3.339 − 46 =
4. 4.69 − 17 =
5. 5.387 − 67 =
6. 6.74 − 58 =
7. 7.389 − 39 =
8. 8.137 − 16 =
9. 9.522 − 97 =
10. 10.595 − 36 =
11. 11.505 − 47 =
12. 12.432 − 67 =
13. 13.186 − 26 =
14. 14.177 − 67 =
15. 15.498 − 97 =
16. 16.534 − 36 =
17. 17.122 − 78 =
18. 18.455 − 18 =
19. 19.326 − 37 =
20. 20.156 − 39 =
21. 21.345 − 27 =
22. 22.203 − 69 =
23. 23.468 − 36 =
24. 24.261 − 76 =
25. 25.514 − 26 =
26. 26.478 − 97 =
27. 27.596 − 27 =
28. 28.468 − 98 =
29. 29.532 − 56 =
30. 30.172 − 36 =
31. 31.77 − 38 =
32. 32.149 − 36 =
33. 33.160 − 69 =
34. 34.533 − 89 =
35. 35.326 − 58 =
36. 36.454 − 36 =
37. 37.459 − 46 =
38. 38.544 − 17 =
39. 39.244 − 39 =
40. 40.387 − 69 =

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