Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 264 · 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. 1.424 − 57 =
2. 2.452 − 36 =
3. 3.452 − 48 =
4. 4.361 − 29 =
5. 5.317 − 39 =
6. 6.384 − 87 =
7. 7.487 − 17 =
8. 8.519 − 99 =
9. 9.399 − 77 =
10. 10.313 − 67 =
11. 11.303 − 16 =
12. 12.173 − 79 =
13. 13.562 − 69 =
14. 14.481 − 78 =
15. 15.298 − 88 =
16. 16.96 − 56 =
17. 17.210 − 19 =
18. 18.414 − 26 =
19. 19.403 − 57 =
20. 20.103 − 38 =
21. 21.230 − 68 =
22. 22.164 − 99 =
23. 23.173 − 99 =
24. 24.95 − 18 =
25. 25.238 − 17 =
26. 26.396 − 28 =
27. 27.176 − 39 =
28. 28.202 − 27 =
29. 29.256 − 89 =
30. 30.68 − 56 =
31. 31.133 − 26 =
32. 32.136 − 19 =
33. 33.158 − 67 =
34. 34.591 − 98 =
35. 35.192 − 79 =
36. 36.595 − 87 =
37. 37.117 − 79 =
38. 38.167 − 19 =
39. 39.214 − 66 =
40. 40.430 − 18 =

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