Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 966 · 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. 1.380 − 27 =
2. 2.316 − 77 =
3. 3.373 − 69 =
4. 4.320 − 77 =
5. 5.502 − 66 =
6. 6.346 − 38 =
7. 7.265 − 78 =
8. 8.109 − 18 =
9. 9.368 − 29 =
10. 10.368 − 58 =
11. 11.478 − 69 =
12. 12.505 − 78 =
13. 13.290 − 46 =
14. 14.120 − 29 =
15. 15.169 − 76 =
16. 16.464 − 59 =
17. 17.546 − 16 =
18. 18.397 − 86 =
19. 19.491 − 17 =
20. 20.377 − 78 =
21. 21.144 − 39 =
22. 22.266 − 19 =
23. 23.475 − 26 =
24. 24.53 − 18 =
25. 25.344 − 27 =
26. 26.86 − 59 =
27. 27.134 − 79 =
28. 28.407 − 98 =
29. 29.206 − 37 =
30. 30.186 − 58 =
31. 31.536 − 66 =
32. 32.494 − 77 =
33. 33.115 − 36 =
34. 34.531 − 97 =
35. 35.593 − 87 =
36. 36.497 − 27 =
37. 37.421 − 78 =
38. 38.475 − 38 =
39. 39.510 − 88 =
40. 40.224 − 26 =

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