Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 376 · 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. 1.538 − 88 =
2. 2.409 − 16 =
3. 3.500 − 77 =
4. 4.310 − 47 =
5. 5.166 − 96 =
6. 6.149 − 37 =
7. 7.364 − 19 =
8. 8.515 − 38 =
9. 9.176 − 76 =
10. 10.194 − 99 =
11. 11.155 − 89 =
12. 12.596 − 49 =
13. 13.161 − 39 =
14. 14.111 − 87 =
15. 15.494 − 59 =
16. 16.236 − 36 =
17. 17.176 − 87 =
18. 18.121 − 57 =
19. 19.511 − 17 =
20. 20.282 − 89 =
21. 21.94 − 47 =
22. 22.564 − 88 =
23. 23.571 − 38 =
24. 24.267 − 97 =
25. 25.409 − 59 =
26. 26.92 − 46 =
27. 27.415 − 37 =
28. 28.268 − 19 =
29. 29.571 − 88 =
30. 30.186 − 68 =
31. 31.574 − 76 =
32. 32.535 − 17 =
33. 33.159 − 68 =
34. 34.105 − 96 =
35. 35.101 − 78 =
36. 36.364 − 67 =
37. 37.162 − 67 =
38. 38.143 − 59 =
39. 39.147 − 17 =
40. 40.387 − 86 =

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