Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 592 · 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. 1.236 − 77 =
2. 2.428 − 87 =
3. 3.565 − 97 =
4. 4.76 − 37 =
5. 5.394 − 99 =
6. 6.572 − 88 =
7. 7.95 − 37 =
8. 8.201 − 17 =
9. 9.469 − 46 =
10. 10.320 − 89 =
11. 11.424 − 26 =
12. 12.315 − 79 =
13. 13.548 − 58 =
14. 14.563 − 77 =
15. 15.538 − 89 =
16. 16.327 − 27 =
17. 17.517 − 37 =
18. 18.595 − 36 =
19. 19.73 − 66 =
20. 20.453 − 97 =
21. 21.523 − 89 =
22. 22.219 − 47 =
23. 23.78 − 48 =
24. 24.182 − 16 =
25. 25.497 − 66 =
26. 26.496 − 16 =
27. 27.148 − 27 =
28. 28.267 − 38 =
29. 29.52 − 16 =
30. 30.157 − 69 =
31. 31.512 − 16 =
32. 32.105 − 58 =
33. 33.287 − 36 =
34. 34.514 − 78 =
35. 35.472 − 46 =
36. 36.433 − 99 =
37. 37.144 − 79 =
38. 38.591 − 19 =
39. 39.121 − 17 =
40. 40.207 − 56 =

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