Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 253 · 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. 1.259 − 46 =
2. 2.232 − 99 =
3. 3.166 − 36 =
4. 4.349 − 18 =
5. 5.357 − 79 =
6. 6.125 − 46 =
7. 7.499 − 36 =
8. 8.563 − 36 =
9. 9.409 − 67 =
10. 10.93 − 46 =
11. 11.288 − 36 =
12. 12.157 − 29 =
13. 13.148 − 79 =
14. 14.529 − 78 =
15. 15.437 − 79 =
16. 16.79 − 66 =
17. 17.443 − 17 =
18. 18.339 − 48 =
19. 19.479 − 97 =
20. 20.304 − 78 =
21. 21.265 − 29 =
22. 22.218 − 78 =
23. 23.138 − 19 =
24. 24.426 − 99 =
25. 25.147 − 66 =
26. 26.522 − 29 =
27. 27.594 − 97 =
28. 28.72 − 57 =
29. 29.395 − 39 =
30. 30.61 − 36 =
31. 31.335 − 48 =
32. 32.180 − 69 =
33. 33.197 − 76 =
34. 34.418 − 79 =
35. 35.237 − 39 =
36. 36.214 − 38 =
37. 37.113 − 16 =
38. 38.496 − 17 =
39. 39.501 − 88 =
40. 40.264 − 97 =

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