Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 819 · 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. 1.271 − 16 =
2. 2.547 − 96 =
3. 3.311 − 86 =
4. 4.467 − 18 =
5. 5.126 − 98 =
6. 6.223 − 56 =
7. 7.184 − 56 =
8. 8.518 − 27 =
9. 9.227 − 58 =
10. 10.127 − 37 =
11. 11.198 − 88 =
12. 12.568 − 57 =
13. 13.272 − 46 =
14. 14.443 − 86 =
15. 15.224 − 59 =
16. 16.486 − 89 =
17. 17.439 − 76 =
18. 18.142 − 26 =
19. 19.574 − 17 =
20. 20.335 − 58 =
21. 21.523 − 66 =
22. 22.380 − 18 =
23. 23.115 − 26 =
24. 24.210 − 57 =
25. 25.272 − 36 =
26. 26.206 − 68 =
27. 27.324 − 26 =
28. 28.130 − 36 =
29. 29.570 − 76 =
30. 30.305 − 47 =
31. 31.471 − 38 =
32. 32.386 − 97 =
33. 33.181 − 96 =
34. 34.347 − 37 =
35. 35.85 − 46 =
36. 36.404 − 76 =
37. 37.137 − 27 =
38. 38.121 − 49 =
39. 39.472 − 59 =
40. 40.573 − 28 =

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