Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 757 · 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. 1.342 − 16 =
2. 2.227 − 19 =
3. 3.152 − 89 =
4. 4.394 − 96 =
5. 5.202 − 58 =
6. 6.553 − 29 =
7. 7.492 − 17 =
8. 8.375 − 16 =
9. 9.322 − 57 =
10. 10.244 − 48 =
11. 11.521 − 76 =
12. 12.303 − 36 =
13. 13.401 − 38 =
14. 14.490 − 18 =
15. 15.387 − 96 =
16. 16.141 − 96 =
17. 17.488 − 19 =
18. 18.432 − 16 =
19. 19.594 − 56 =
20. 20.229 − 18 =
21. 21.325 − 18 =
22. 22.323 − 27 =
23. 23.271 − 66 =
24. 24.576 − 49 =
25. 25.242 − 76 =
26. 26.252 − 37 =
27. 27.407 − 37 =
28. 28.512 − 48 =
29. 29.218 − 39 =
30. 30.165 − 98 =
31. 31.507 − 78 =
32. 32.258 − 37 =
33. 33.55 − 26 =
34. 34.162 − 86 =
35. 35.362 − 78 =
36. 36.136 − 98 =
37. 37.56 − 39 =
38. 38.296 − 87 =
39. 39.211 − 88 =
40. 40.595 − 78 =

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