Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 182 · 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. 1.90 − 87 =
2. 2.388 − 37 =
3. 3.548 − 79 =
4. 4.265 − 49 =
5. 5.452 − 66 =
6. 6.425 − 86 =
7. 7.531 − 98 =
8. 8.251 − 18 =
9. 9.444 − 18 =
10. 10.223 − 96 =
11. 11.87 − 38 =
12. 12.161 − 88 =
13. 13.551 − 89 =
14. 14.530 − 57 =
15. 15.523 − 37 =
16. 16.286 − 29 =
17. 17.417 − 66 =
18. 18.157 − 77 =
19. 19.123 − 99 =
20. 20.554 − 18 =
21. 21.232 − 37 =
22. 22.326 − 56 =
23. 23.402 − 36 =
24. 24.329 − 36 =
25. 25.265 − 79 =
26. 26.273 − 49 =
27. 27.294 − 16 =
28. 28.353 − 79 =
29. 29.70 − 37 =
30. 30.386 − 58 =
31. 31.153 − 17 =
32. 32.57 − 36 =
33. 33.103 − 68 =
34. 34.294 − 27 =
35. 35.156 − 67 =
36. 36.253 − 99 =
37. 37.590 − 76 =
38. 38.293 − 39 =
39. 39.490 − 79 =
40. 40.208 − 69 =

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