Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 484 · 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. 1.559 − 97 =
2. 2.555 − 97 =
3. 3.409 − 98 =
4. 4.290 − 26 =
5. 5.342 − 27 =
6. 6.375 − 16 =
7. 7.188 − 98 =
8. 8.599 − 26 =
9. 9.522 − 18 =
10. 10.135 − 46 =
11. 11.552 − 19 =
12. 12.249 − 19 =
13. 13.186 − 87 =
14. 14.366 − 38 =
15. 15.177 − 37 =
16. 16.135 − 79 =
17. 17.330 − 96 =
18. 18.130 − 88 =
19. 19.105 − 59 =
20. 20.295 − 66 =
21. 21.346 − 36 =
22. 22.232 − 47 =
23. 23.467 − 28 =
24. 24.206 − 96 =
25. 25.163 − 97 =
26. 26.266 − 88 =
27. 27.304 − 79 =
28. 28.489 − 49 =
29. 29.85 − 17 =
30. 30.118 − 97 =
31. 31.306 − 98 =
32. 32.98 − 78 =
33. 33.136 − 96 =
34. 34.545 − 38 =
35. 35.233 − 77 =
36. 36.290 − 76 =
37. 37.280 − 16 =
38. 38.186 − 57 =
39. 39.559 − 47 =
40. 40.255 − 66 =

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