Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 825 · 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. 1.161 − 47 =
2. 2.131 − 98 =
3. 3.130 − 28 =
4. 4.63 − 36 =
5. 5.593 − 58 =
6. 6.130 − 49 =
7. 7.442 − 26 =
8. 8.349 − 18 =
9. 9.471 − 28 =
10. 10.201 − 98 =
11. 11.102 − 37 =
12. 12.161 − 79 =
13. 13.111 − 16 =
14. 14.493 − 17 =
15. 15.352 − 36 =
16. 16.565 − 37 =
17. 17.435 − 47 =
18. 18.282 − 66 =
19. 19.56 − 27 =
20. 20.249 − 27 =
21. 21.483 − 66 =
22. 22.371 − 86 =
23. 23.456 − 47 =
24. 24.335 − 37 =
25. 25.90 − 66 =
26. 26.153 − 86 =
27. 27.543 − 89 =
28. 28.161 − 78 =
29. 29.301 − 47 =
30. 30.162 − 98 =
31. 31.180 − 68 =
32. 32.548 − 37 =
33. 33.251 − 16 =
34. 34.212 − 77 =
35. 35.314 − 89 =
36. 36.321 − 47 =
37. 37.205 − 29 =
38. 38.131 − 36 =
39. 39.366 − 29 =
40. 40.419 − 39 =

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