Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 77 · 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. 1.511 − 86 =
2. 2.401 − 77 =
3. 3.231 − 36 =
4. 4.406 − 46 =
5. 5.508 − 39 =
6. 6.113 − 56 =
7. 7.229 − 79 =
8. 8.151 − 87 =
9. 9.394 − 99 =
10. 10.188 − 76 =
11. 11.560 − 16 =
12. 12.103 − 79 =
13. 13.476 − 56 =
14. 14.232 − 18 =
15. 15.108 − 78 =
16. 16.290 − 18 =
17. 17.123 − 28 =
18. 18.124 − 16 =
19. 19.63 − 56 =
20. 20.399 − 67 =
21. 21.82 − 49 =
22. 22.204 − 56 =
23. 23.587 − 49 =
24. 24.328 − 26 =
25. 25.510 − 77 =
26. 26.95 − 88 =
27. 27.83 − 16 =
28. 28.68 − 49 =
29. 29.467 − 47 =
30. 30.547 − 56 =
31. 31.259 − 79 =
32. 32.419 − 26 =
33. 33.394 − 18 =
34. 34.71 − 67 =
35. 35.413 − 89 =
36. 36.221 − 49 =
37. 37.88 − 86 =
38. 38.593 − 18 =
39. 39.584 − 27 =
40. 40.152 − 99 =

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