Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 722 · 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. 1.399 − 19 =
2. 2.78 − 36 =
3. 3.115 − 78 =
4. 4.64 − 58 =
5. 5.161 − 19 =
6. 6.272 − 97 =
7. 7.347 − 86 =
8. 8.119 − 28 =
9. 9.295 − 16 =
10. 10.564 − 97 =
11. 11.523 − 38 =
12. 12.254 − 59 =
13. 13.574 − 77 =
14. 14.302 − 18 =
15. 15.121 − 68 =
16. 16.511 − 69 =
17. 17.506 − 59 =
18. 18.115 − 98 =
19. 19.149 − 56 =
20. 20.134 − 39 =
21. 21.521 − 67 =
22. 22.108 − 97 =
23. 23.149 − 49 =
24. 24.588 − 67 =
25. 25.388 − 18 =
26. 26.167 − 26 =
27. 27.566 − 79 =
28. 28.332 − 88 =
29. 29.499 − 87 =
30. 30.243 − 56 =
31. 31.181 − 86 =
32. 32.159 − 89 =
33. 33.257 − 67 =
34. 34.180 − 19 =
35. 35.210 − 26 =
36. 36.590 − 66 =
37. 37.172 − 97 =
38. 38.407 − 67 =
39. 39.353 − 87 =
40. 40.431 − 79 =

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