Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 436 · 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. 1.345 − 17 =
2. 2.291 − 38 =
3. 3.154 − 37 =
4. 4.406 − 27 =
5. 5.548 − 26 =
6. 6.529 − 26 =
7. 7.592 − 37 =
8. 8.520 − 36 =
9. 9.367 − 36 =
10. 10.95 − 27 =
11. 11.384 − 58 =
12. 12.200 − 88 =
13. 13.163 − 36 =
14. 14.111 − 99 =
15. 15.135 − 28 =
16. 16.130 − 68 =
17. 17.547 − 98 =
18. 18.493 − 38 =
19. 19.391 − 18 =
20. 20.213 − 38 =
21. 21.366 − 88 =
22. 22.356 − 49 =
23. 23.410 − 88 =
24. 24.342 − 59 =
25. 25.447 − 98 =
26. 26.435 − 97 =
27. 27.489 − 58 =
28. 28.315 − 76 =
29. 29.398 − 78 =
30. 30.465 − 18 =
31. 31.222 − 38 =
32. 32.559 − 86 =
33. 33.205 − 37 =
34. 34.411 − 57 =
35. 35.204 − 26 =
36. 36.501 − 19 =
37. 37.187 − 28 =
38. 38.300 − 86 =
39. 39.562 − 67 =
40. 40.84 − 66 =

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