Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 905 · 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. 1.212 − 56 =
2. 2.329 − 58 =
3. 3.445 − 47 =
4. 4.422 − 87 =
5. 5.519 − 98 =
6. 6.160 − 36 =
7. 7.162 − 88 =
8. 8.90 − 86 =
9. 9.557 − 69 =
10. 10.211 − 77 =
11. 11.330 − 78 =
12. 12.381 − 96 =
13. 13.424 − 46 =
14. 14.197 − 98 =
15. 15.529 − 19 =
16. 16.153 − 28 =
17. 17.486 − 37 =
18. 18.79 − 78 =
19. 19.577 − 37 =
20. 20.279 − 79 =
21. 21.479 − 26 =
22. 22.232 − 67 =
23. 23.250 − 56 =
24. 24.508 − 47 =
25. 25.418 − 56 =
26. 26.489 − 78 =
27. 27.432 − 19 =
28. 28.80 − 29 =
29. 29.385 − 86 =
30. 30.338 − 16 =
31. 31.536 − 19 =
32. 32.188 − 47 =
33. 33.103 − 68 =
34. 34.543 − 39 =
35. 35.470 − 17 =
36. 36.157 − 58 =
37. 37.296 − 77 =
38. 38.128 − 68 =
39. 39.105 − 98 =
40. 40.170 − 89 =

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