Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 900 · 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. 1.326 − 57 =
2. 2.517 − 38 =
3. 3.416 − 48 =
4. 4.340 − 19 =
5. 5.315 − 58 =
6. 6.529 − 28 =
7. 7.121 − 37 =
8. 8.361 − 38 =
9. 9.194 − 59 =
10. 10.598 − 47 =
11. 11.319 − 59 =
12. 12.499 − 16 =
13. 13.226 − 77 =
14. 14.285 − 47 =
15. 15.311 − 26 =
16. 16.382 − 66 =
17. 17.105 − 29 =
18. 18.540 − 19 =
19. 19.184 − 56 =
20. 20.170 − 29 =
21. 21.488 − 86 =
22. 22.225 − 38 =
23. 23.419 − 66 =
24. 24.88 − 57 =
25. 25.465 − 47 =
26. 26.553 − 48 =
27. 27.131 − 49 =
28. 28.470 − 18 =
29. 29.330 − 37 =
30. 30.446 − 97 =
31. 31.301 − 29 =
32. 32.153 − 56 =
33. 33.579 − 57 =
34. 34.233 − 77 =
35. 35.61 − 16 =
36. 36.274 − 96 =
37. 37.116 − 19 =
38. 38.201 − 89 =
39. 39.510 − 38 =
40. 40.373 − 29 =

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