Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 527 · 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. 1.86 − 28 =
2. 2.541 − 18 =
3. 3.206 − 18 =
4. 4.401 − 37 =
5. 5.185 − 37 =
6. 6.453 − 16 =
7. 7.201 − 36 =
8. 8.272 − 37 =
9. 9.525 − 58 =
10. 10.381 − 68 =
11. 11.331 − 18 =
12. 12.424 − 37 =
13. 13.398 − 78 =
14. 14.174 − 46 =
15. 15.169 − 29 =
16. 16.227 − 46 =
17. 17.139 − 26 =
18. 18.316 − 46 =
19. 19.187 − 87 =
20. 20.225 − 99 =
21. 21.128 − 78 =
22. 22.260 − 57 =
23. 23.275 − 38 =
24. 24.419 − 68 =
25. 25.98 − 27 =
26. 26.150 − 66 =
27. 27.446 − 79 =
28. 28.376 − 36 =
29. 29.159 − 98 =
30. 30.495 − 76 =
31. 31.179 − 99 =
32. 32.472 − 76 =
33. 33.183 − 16 =
34. 34.312 − 76 =
35. 35.391 − 28 =
36. 36.341 − 79 =
37. 37.581 − 39 =
38. 38.394 − 36 =
39. 39.142 − 19 =
40. 40.529 − 78 =

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