Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 699 · 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. 1.58 − 36 =
2. 2.396 − 19 =
3. 3.508 − 68 =
4. 4.438 − 56 =
5. 5.333 − 76 =
6. 6.310 − 69 =
7. 7.73 − 66 =
8. 8.154 − 86 =
9. 9.189 − 76 =
10. 10.129 − 89 =
11. 11.124 − 46 =
12. 12.211 − 96 =
13. 13.416 − 96 =
14. 14.535 − 56 =
15. 15.161 − 67 =
16. 16.577 − 18 =
17. 17.437 − 26 =
18. 18.180 − 86 =
19. 19.81 − 39 =
20. 20.456 − 68 =
21. 21.361 − 19 =
22. 22.71 − 38 =
23. 23.148 − 88 =
24. 24.572 − 86 =
25. 25.553 − 36 =
26. 26.148 − 46 =
27. 27.225 − 77 =
28. 28.160 − 38 =
29. 29.454 − 99 =
30. 30.490 − 69 =
31. 31.552 − 26 =
32. 32.550 − 69 =
33. 33.229 − 36 =
34. 34.307 − 97 =
35. 35.568 − 37 =
36. 36.446 − 59 =
37. 37.389 − 88 =
38. 38.189 − 19 =
39. 39.269 − 97 =
40. 40.109 − 49 =

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