Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 693 · 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. 1.273 − 19 =
2. 2.418 − 16 =
3. 3.559 − 79 =
4. 4.274 − 68 =
5. 5.307 − 49 =
6. 6.483 − 86 =
7. 7.474 − 18 =
8. 8.385 − 89 =
9. 9.499 − 38 =
10. 10.327 − 56 =
11. 11.159 − 97 =
12. 12.354 − 27 =
13. 13.77 − 16 =
14. 14.389 − 17 =
15. 15.143 − 28 =
16. 16.126 − 76 =
17. 17.528 − 29 =
18. 18.191 − 49 =
19. 19.447 − 36 =
20. 20.399 − 69 =
21. 21.485 − 17 =
22. 22.525 − 19 =
23. 23.304 − 66 =
24. 24.258 − 26 =
25. 25.534 − 37 =
26. 26.193 − 36 =
27. 27.245 − 46 =
28. 28.412 − 96 =
29. 29.555 − 88 =
30. 30.370 − 66 =
31. 31.128 − 39 =
32. 32.494 − 66 =
33. 33.538 − 66 =
34. 34.471 − 78 =
35. 35.256 − 27 =
36. 36.459 − 39 =
37. 37.143 − 78 =
38. 38.400 − 37 =
39. 39.394 − 17 =
40. 40.413 − 29 =

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