Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 343 · 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. 1.459 − 57 =
2. 2.206 − 27 =
3. 3.368 − 36 =
4. 4.446 − 59 =
5. 5.577 − 37 =
6. 6.350 − 47 =
7. 7.369 − 97 =
8. 8.109 − 79 =
9. 9.186 − 99 =
10. 10.194 − 36 =
11. 11.219 − 59 =
12. 12.415 − 37 =
13. 13.87 − 66 =
14. 14.221 − 79 =
15. 15.149 − 98 =
16. 16.581 − 98 =
17. 17.590 − 66 =
18. 18.174 − 17 =
19. 19.463 − 28 =
20. 20.575 − 38 =
21. 21.130 − 47 =
22. 22.300 − 56 =
23. 23.212 − 88 =
24. 24.318 − 76 =
25. 25.136 − 18 =
26. 26.536 − 58 =
27. 27.253 − 27 =
28. 28.198 − 16 =
29. 29.347 − 88 =
30. 30.548 − 66 =
31. 31.122 − 88 =
32. 32.396 − 48 =
33. 33.256 − 57 =
34. 34.122 − 98 =
35. 35.205 − 39 =
36. 36.522 − 99 =
37. 37.144 − 86 =
38. 38.393 − 59 =
39. 39.536 − 27 =
40. 40.59 − 16 =

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