Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 5 · 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. 1.441 − 28 =
2. 2.326 − 79 =
3. 3.431 − 27 =
4. 4.185 − 77 =
5. 5.513 − 77 =
6. 6.265 − 28 =
7. 7.304 − 76 =
8. 8.431 − 66 =
9. 9.559 − 96 =
10. 10.428 − 57 =
11. 11.325 − 37 =
12. 12.574 − 98 =
13. 13.130 − 56 =
14. 14.548 − 46 =
15. 15.131 − 99 =
16. 16.165 − 88 =
17. 17.494 − 37 =
18. 18.249 − 27 =
19. 19.441 − 18 =
20. 20.598 − 98 =
21. 21.222 − 68 =
22. 22.124 − 48 =
23. 23.431 − 48 =
24. 24.132 − 57 =
25. 25.435 − 26 =
26. 26.545 − 76 =
27. 27.362 − 69 =
28. 28.450 − 69 =
29. 29.257 − 69 =
30. 30.338 − 89 =
31. 31.76 − 68 =
32. 32.80 − 68 =
33. 33.533 − 97 =
34. 34.345 − 17 =
35. 35.231 − 56 =
36. 36.304 − 77 =
37. 37.414 − 66 =
38. 38.400 − 28 =
39. 39.520 − 46 =
40. 40.175 − 78 =

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