Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 374 · 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. 1.383 − 38 =
2. 2.120 − 59 =
3. 3.74 − 19 =
4. 4.184 − 28 =
5. 5.324 − 99 =
6. 6.462 − 49 =
7. 7.105 − 89 =
8. 8.354 − 16 =
9. 9.390 − 87 =
10. 10.524 − 18 =
11. 11.344 − 66 =
12. 12.308 − 18 =
13. 13.516 − 36 =
14. 14.102 − 28 =
15. 15.379 − 19 =
16. 16.425 − 68 =
17. 17.386 − 59 =
18. 18.509 − 16 =
19. 19.359 − 28 =
20. 20.356 − 18 =
21. 21.586 − 96 =
22. 22.573 − 37 =
23. 23.482 − 19 =
24. 24.206 − 76 =
25. 25.150 − 69 =
26. 26.93 − 36 =
27. 27.546 − 19 =
28. 28.334 − 89 =
29. 29.585 − 59 =
30. 30.269 − 27 =
31. 31.382 − 18 =
32. 32.387 − 16 =
33. 33.445 − 78 =
34. 34.318 − 57 =
35. 35.500 − 68 =
36. 36.100 − 68 =
37. 37.355 − 46 =
38. 38.462 − 38 =
39. 39.147 − 56 =
40. 40.340 − 38 =

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