Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 248 · 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. 1.402 − 78 =
2. 2.53 − 38 =
3. 3.259 − 46 =
4. 4.288 − 98 =
5. 5.211 − 89 =
6. 6.462 − 49 =
7. 7.157 − 27 =
8. 8.107 − 88 =
9. 9.377 − 97 =
10. 10.599 − 29 =
11. 11.296 − 49 =
12. 12.81 − 49 =
13. 13.218 − 47 =
14. 14.414 − 67 =
15. 15.246 − 36 =
16. 16.587 − 47 =
17. 17.502 − 46 =
18. 18.268 − 18 =
19. 19.569 − 18 =
20. 20.99 − 36 =
21. 21.385 − 59 =
22. 22.293 − 88 =
23. 23.151 − 96 =
24. 24.383 − 26 =
25. 25.233 − 68 =
26. 26.113 − 48 =
27. 27.399 − 78 =
28. 28.479 − 57 =
29. 29.340 − 57 =
30. 30.110 − 58 =
31. 31.550 − 29 =
32. 32.241 − 48 =
33. 33.58 − 27 =
34. 34.435 − 96 =
35. 35.151 − 88 =
36. 36.455 − 67 =
37. 37.406 − 77 =
38. 38.135 − 97 =
39. 39.531 − 46 =
40. 40.339 − 86 =

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