Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 67 · 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. 1.375 − 46 =
2. 2.118 − 56 =
3. 3.231 − 67 =
4. 4.197 − 27 =
5. 5.483 − 16 =
6. 6.446 − 18 =
7. 7.64 − 56 =
8. 8.307 − 28 =
9. 9.435 − 56 =
10. 10.231 − 48 =
11. 11.152 − 98 =
12. 12.74 − 57 =
13. 13.404 − 79 =
14. 14.100 − 76 =
15. 15.309 − 99 =
16. 16.149 − 26 =
17. 17.178 − 86 =
18. 18.177 − 97 =
19. 19.256 − 26 =
20. 20.328 − 27 =
21. 21.169 − 78 =
22. 22.83 − 56 =
23. 23.223 − 96 =
24. 24.283 − 48 =
25. 25.265 − 79 =
26. 26.328 − 97 =
27. 27.496 − 76 =
28. 28.262 − 48 =
29. 29.172 − 76 =
30. 30.566 − 98 =
31. 31.286 − 59 =
32. 32.400 − 19 =
33. 33.123 − 59 =
34. 34.594 − 76 =
35. 35.563 − 27 =
36. 36.505 − 89 =
37. 37.415 − 27 =
38. 38.497 − 27 =
39. 39.457 − 19 =
40. 40.527 − 67 =

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