Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 280 · 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. 1.334 − 66 =
2. 2.374 − 29 =
3. 3.566 − 76 =
4. 4.271 − 46 =
5. 5.183 − 28 =
6. 6.339 − 67 =
7. 7.291 − 39 =
8. 8.552 − 47 =
9. 9.250 − 59 =
10. 10.395 − 59 =
11. 11.321 − 69 =
12. 12.414 − 88 =
13. 13.164 − 68 =
14. 14.534 − 76 =
15. 15.149 − 88 =
16. 16.383 − 19 =
17. 17.349 − 87 =
18. 18.318 − 17 =
19. 19.259 − 57 =
20. 20.244 − 56 =
21. 21.247 − 59 =
22. 22.360 − 97 =
23. 23.123 − 89 =
24. 24.167 − 69 =
25. 25.57 − 38 =
26. 26.379 − 66 =
27. 27.116 − 38 =
28. 28.404 − 29 =
29. 29.222 − 39 =
30. 30.363 − 46 =
31. 31.341 − 78 =
32. 32.170 − 17 =
33. 33.128 − 47 =
34. 34.545 − 87 =
35. 35.218 − 56 =
36. 36.431 − 97 =
37. 37.142 − 99 =
38. 38.370 − 39 =
39. 39.347 − 59 =
40. 40.318 − 66 =

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