Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 859 · 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. 1.146 − 98 =
2. 2.574 − 67 =
3. 3.79 − 29 =
4. 4.110 − 46 =
5. 5.487 − 66 =
6. 6.304 − 26 =
7. 7.234 − 98 =
8. 8.461 − 86 =
9. 9.141 − 97 =
10. 10.360 − 69 =
11. 11.596 − 27 =
12. 12.81 − 78 =
13. 13.592 − 18 =
14. 14.461 − 66 =
15. 15.433 − 47 =
16. 16.237 − 36 =
17. 17.107 − 76 =
18. 18.187 − 98 =
19. 19.149 − 66 =
20. 20.314 − 17 =
21. 21.354 − 88 =
22. 22.349 − 39 =
23. 23.474 − 67 =
24. 24.314 − 27 =
25. 25.450 − 97 =
26. 26.232 − 86 =
27. 27.339 − 49 =
28. 28.236 − 89 =
29. 29.313 − 47 =
30. 30.297 − 36 =
31. 31.296 − 79 =
32. 32.110 − 97 =
33. 33.299 − 48 =
34. 34.261 − 68 =
35. 35.435 − 56 =
36. 36.463 − 39 =
37. 37.282 − 76 =
38. 38.594 − 17 =
39. 39.200 − 37 =
40. 40.127 − 28 =

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