Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 119 · 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. 1.409 − 86 =
2. 2.573 − 47 =
3. 3.164 − 87 =
4. 4.221 − 16 =
5. 5.586 − 38 =
6. 6.347 − 49 =
7. 7.563 − 36 =
8. 8.563 − 19 =
9. 9.222 − 98 =
10. 10.354 − 97 =
11. 11.593 − 46 =
12. 12.400 − 16 =
13. 13.370 − 29 =
14. 14.313 − 56 =
15. 15.456 − 48 =
16. 16.215 − 99 =
17. 17.405 − 39 =
18. 18.406 − 36 =
19. 19.149 − 27 =
20. 20.462 − 86 =
21. 21.433 − 47 =
22. 22.511 − 86 =
23. 23.193 − 78 =
24. 24.117 − 16 =
25. 25.505 − 39 =
26. 26.408 − 79 =
27. 27.191 − 29 =
28. 28.167 − 68 =
29. 29.498 − 39 =
30. 30.281 − 97 =
31. 31.236 − 38 =
32. 32.420 − 89 =
33. 33.526 − 48 =
34. 34.257 − 88 =
35. 35.599 − 19 =
36. 36.517 − 68 =
37. 37.284 − 26 =
38. 38.381 − 18 =
39. 39.378 − 37 =
40. 40.359 − 19 =

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