Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 982 · 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. 1.114 − 96 =
2. 2.89 − 38 =
3. 3.570 − 28 =
4. 4.166 − 26 =
5. 5.559 − 17 =
6. 6.200 − 58 =
7. 7.265 − 48 =
8. 8.585 − 67 =
9. 9.207 − 96 =
10. 10.91 − 56 =
11. 11.562 − 18 =
12. 12.123 − 16 =
13. 13.470 − 26 =
14. 14.96 − 86 =
15. 15.211 − 78 =
16. 16.274 − 66 =
17. 17.392 − 29 =
18. 18.345 − 27 =
19. 19.166 − 67 =
20. 20.506 − 39 =
21. 21.202 − 37 =
22. 22.245 − 18 =
23. 23.222 − 26 =
24. 24.538 − 77 =
25. 25.126 − 57 =
26. 26.114 − 57 =
27. 27.596 − 49 =
28. 28.89 − 18 =
29. 29.219 − 39 =
30. 30.193 − 98 =
31. 31.198 − 67 =
32. 32.405 − 99 =
33. 33.589 − 16 =
34. 34.514 − 76 =
35. 35.470 − 67 =
36. 36.353 − 39 =
37. 37.298 − 76 =
38. 38.396 − 67 =
39. 39.313 − 78 =
40. 40.369 − 86 =

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