Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 752 · 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. 1.422 − 39 =
2. 2.163 − 57 =
3. 3.520 − 78 =
4. 4.183 − 97 =
5. 5.141 − 18 =
6. 6.479 − 79 =
7. 7.312 − 58 =
8. 8.241 − 79 =
9. 9.598 − 26 =
10. 10.353 − 86 =
11. 11.529 − 99 =
12. 12.182 − 86 =
13. 13.323 − 69 =
14. 14.302 − 76 =
15. 15.481 − 27 =
16. 16.82 − 68 =
17. 17.343 − 79 =
18. 18.452 − 46 =
19. 19.103 − 39 =
20. 20.132 − 69 =
21. 21.285 − 16 =
22. 22.213 − 76 =
23. 23.462 − 89 =
24. 24.98 − 38 =
25. 25.180 − 26 =
26. 26.515 − 78 =
27. 27.199 − 36 =
28. 28.92 − 39 =
29. 29.376 − 37 =
30. 30.327 − 68 =
31. 31.62 − 16 =
32. 32.121 − 36 =
33. 33.597 − 48 =
34. 34.149 − 37 =
35. 35.383 − 19 =
36. 36.516 − 46 =
37. 37.294 − 79 =
38. 38.260 − 57 =
39. 39.212 − 76 =
40. 40.203 − 27 =

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