Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 879 · 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. 1.499 − 36 =
2. 2.451 − 66 =
3. 3.373 − 56 =
4. 4.599 − 59 =
5. 5.181 − 99 =
6. 6.314 − 27 =
7. 7.277 − 18 =
8. 8.98 − 97 =
9. 9.200 − 18 =
10. 10.411 − 59 =
11. 11.543 − 36 =
12. 12.224 − 16 =
13. 13.289 − 96 =
14. 14.521 − 38 =
15. 15.383 − 39 =
16. 16.143 − 26 =
17. 17.264 − 39 =
18. 18.148 − 59 =
19. 19.535 − 16 =
20. 20.163 − 89 =
21. 21.416 − 76 =
22. 22.289 − 47 =
23. 23.67 − 38 =
24. 24.165 − 89 =
25. 25.157 − 68 =
26. 26.491 − 67 =
27. 27.101 − 27 =
28. 28.370 − 59 =
29. 29.278 − 37 =
30. 30.167 − 66 =
31. 31.323 − 27 =
32. 32.504 − 38 =
33. 33.358 − 89 =
34. 34.104 − 76 =
35. 35.314 − 19 =
36. 36.295 − 76 =
37. 37.153 − 18 =
38. 38.571 − 99 =
39. 39.184 − 29 =
40. 40.496 − 68 =

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