Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 852 · 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. 1.122 − 39 =
2. 2.187 − 76 =
3. 3.328 − 56 =
4. 4.239 − 56 =
5. 5.377 − 26 =
6. 6.406 − 16 =
7. 7.188 − 89 =
8. 8.351 − 38 =
9. 9.93 − 59 =
10. 10.582 − 77 =
11. 11.403 − 59 =
12. 12.323 − 37 =
13. 13.480 − 19 =
14. 14.413 − 59 =
15. 15.74 − 39 =
16. 16.389 − 46 =
17. 17.200 − 39 =
18. 18.532 − 87 =
19. 19.103 − 78 =
20. 20.483 − 96 =
21. 21.587 − 48 =
22. 22.462 − 79 =
23. 23.214 − 48 =
24. 24.291 − 78 =
25. 25.78 − 39 =
26. 26.299 − 57 =
27. 27.259 − 49 =
28. 28.239 − 38 =
29. 29.527 − 76 =
30. 30.152 − 19 =
31. 31.514 − 49 =
32. 32.348 − 18 =
33. 33.183 − 17 =
34. 34.232 − 29 =
35. 35.139 − 37 =
36. 36.392 − 19 =
37. 37.459 − 57 =
38. 38.432 − 19 =
39. 39.549 − 17 =
40. 40.370 − 57 =

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