Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 580 · 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. 1.461 − 37 =
2. 2.276 − 19 =
3. 3.544 − 68 =
4. 4.357 − 26 =
5. 5.411 − 29 =
6. 6.121 − 68 =
7. 7.147 − 58 =
8. 8.520 − 97 =
9. 9.137 − 37 =
10. 10.111 − 29 =
11. 11.508 − 28 =
12. 12.396 − 66 =
13. 13.280 − 97 =
14. 14.265 − 57 =
15. 15.590 − 77 =
16. 16.589 − 67 =
17. 17.86 − 38 =
18. 18.317 − 76 =
19. 19.505 − 37 =
20. 20.192 − 78 =
21. 21.152 − 48 =
22. 22.514 − 88 =
23. 23.209 − 29 =
24. 24.192 − 26 =
25. 25.232 − 29 =
26. 26.318 − 69 =
27. 27.89 − 56 =
28. 28.470 − 29 =
29. 29.431 − 76 =
30. 30.526 − 37 =
31. 31.181 − 27 =
32. 32.330 − 76 =
33. 33.372 − 88 =
34. 34.325 − 96 =
35. 35.67 − 19 =
36. 36.474 − 97 =
37. 37.188 − 97 =
38. 38.545 − 27 =
39. 39.74 − 49 =
40. 40.481 − 76 =

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