Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 834 · 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. 1.537 − 26 =
2. 2.95 − 86 =
3. 3.245 − 36 =
4. 4.148 − 58 =
5. 5.517 − 77 =
6. 6.216 − 76 =
7. 7.224 − 37 =
8. 8.263 − 78 =
9. 9.223 − 57 =
10. 10.423 − 67 =
11. 11.115 − 68 =
12. 12.591 − 66 =
13. 13.486 − 49 =
14. 14.162 − 67 =
15. 15.287 − 88 =
16. 16.591 − 46 =
17. 17.111 − 76 =
18. 18.200 − 79 =
19. 19.552 − 48 =
20. 20.518 − 86 =
21. 21.107 − 27 =
22. 22.437 − 18 =
23. 23.138 − 98 =
24. 24.567 − 27 =
25. 25.131 − 78 =
26. 26.304 − 16 =
27. 27.280 − 77 =
28. 28.280 − 47 =
29. 29.79 − 29 =
30. 30.205 − 88 =
31. 31.240 − 77 =
32. 32.482 − 66 =
33. 33.331 − 68 =
34. 34.110 − 56 =
35. 35.136 − 48 =
36. 36.217 − 36 =
37. 37.585 − 39 =
38. 38.171 − 26 =
39. 39.116 − 17 =
40. 40.512 − 37 =

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