Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 469 · 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. 1.425 − 29 =
2. 2.559 − 68 =
3. 3.551 − 87 =
4. 4.162 − 28 =
5. 5.240 − 56 =
6. 6.455 − 26 =
7. 7.86 − 37 =
8. 8.148 − 49 =
9. 9.153 − 56 =
10. 10.274 − 86 =
11. 11.202 − 16 =
12. 12.524 − 78 =
13. 13.161 − 16 =
14. 14.584 − 76 =
15. 15.301 − 99 =
16. 16.142 − 37 =
17. 17.562 − 98 =
18. 18.197 − 76 =
19. 19.244 − 86 =
20. 20.149 − 29 =
21. 21.157 − 58 =
22. 22.64 − 56 =
23. 23.115 − 26 =
24. 24.489 − 99 =
25. 25.261 − 66 =
26. 26.494 − 66 =
27. 27.132 − 77 =
28. 28.272 − 86 =
29. 29.462 − 46 =
30. 30.534 − 96 =
31. 31.364 − 57 =
32. 32.86 − 27 =
33. 33.220 − 26 =
34. 34.534 − 38 =
35. 35.200 − 56 =
36. 36.458 − 77 =
37. 37.132 − 26 =
38. 38.558 − 97 =
39. 39.422 − 26 =
40. 40.427 − 69 =

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