Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 651 · 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. 1.448 − 36 =
2. 2.504 − 18 =
3. 3.578 − 99 =
4. 4.502 − 97 =
5. 5.538 − 46 =
6. 6.218 − 97 =
7. 7.116 − 87 =
8. 8.523 − 18 =
9. 9.224 − 66 =
10. 10.131 − 37 =
11. 11.155 − 16 =
12. 12.394 − 69 =
13. 13.128 − 58 =
14. 14.490 − 76 =
15. 15.258 − 17 =
16. 16.578 − 17 =
17. 17.407 − 16 =
18. 18.133 − 96 =
19. 19.519 − 38 =
20. 20.156 − 29 =
21. 21.103 − 87 =
22. 22.311 − 46 =
23. 23.347 − 86 =
24. 24.179 − 79 =
25. 25.169 − 77 =
26. 26.92 − 86 =
27. 27.303 − 77 =
28. 28.156 − 99 =
29. 29.343 − 49 =
30. 30.505 − 26 =
31. 31.119 − 59 =
32. 32.576 − 68 =
33. 33.179 − 78 =
34. 34.552 − 66 =
35. 35.592 − 69 =
36. 36.341 − 98 =
37. 37.476 − 86 =
38. 38.72 − 69 =
39. 39.256 − 86 =
40. 40.314 − 67 =

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