Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 969 · 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. 1.170 − 47 =
2. 2.325 − 56 =
3. 3.110 − 66 =
4. 4.406 − 78 =
5. 5.107 − 58 =
6. 6.513 − 18 =
7. 7.237 − 27 =
8. 8.502 − 66 =
9. 9.495 − 27 =
10. 10.486 − 67 =
11. 11.331 − 56 =
12. 12.426 − 48 =
13. 13.340 − 48 =
14. 14.303 − 38 =
15. 15.546 − 29 =
16. 16.449 − 89 =
17. 17.167 − 76 =
18. 18.192 − 39 =
19. 19.188 − 89 =
20. 20.542 − 96 =
21. 21.446 − 29 =
22. 22.492 − 67 =
23. 23.358 − 87 =
24. 24.177 − 36 =
25. 25.70 − 49 =
26. 26.347 − 58 =
27. 27.502 − 78 =
28. 28.281 − 49 =
29. 29.313 − 16 =
30. 30.209 − 88 =
31. 31.144 − 58 =
32. 32.211 − 47 =
33. 33.249 − 56 =
34. 34.444 − 29 =
35. 35.352 − 66 =
36. 36.463 − 16 =
37. 37.413 − 59 =
38. 38.189 − 99 =
39. 39.254 − 38 =
40. 40.256 − 36 =

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