Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 920 · 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. 1.307 − 68 =
2. 2.566 − 19 =
3. 3.553 − 89 =
4. 4.436 − 39 =
5. 5.139 − 48 =
6. 6.366 − 68 =
7. 7.106 − 36 =
8. 8.210 − 39 =
9. 9.157 − 98 =
10. 10.543 − 48 =
11. 11.424 − 99 =
12. 12.151 − 19 =
13. 13.367 − 77 =
14. 14.268 − 86 =
15. 15.288 − 27 =
16. 16.321 − 66 =
17. 17.170 − 36 =
18. 18.121 − 46 =
19. 19.403 − 27 =
20. 20.153 − 96 =
21. 21.535 − 58 =
22. 22.128 − 37 =
23. 23.221 − 38 =
24. 24.117 − 36 =
25. 25.68 − 38 =
26. 26.598 − 29 =
27. 27.335 − 76 =
28. 28.288 − 18 =
29. 29.519 − 19 =
30. 30.162 − 88 =
31. 31.83 − 27 =
32. 32.505 − 89 =
33. 33.166 − 49 =
34. 34.307 − 88 =
35. 35.53 − 36 =
36. 36.269 − 37 =
37. 37.247 − 96 =
38. 38.324 − 19 =
39. 39.564 − 19 =
40. 40.454 − 79 =

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