Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 865 · 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. 1.218 − 97 =
2. 2.107 − 48 =
3. 3.99 − 59 =
4. 4.70 − 47 =
5. 5.442 − 16 =
6. 6.419 − 48 =
7. 7.67 − 16 =
8. 8.282 − 88 =
9. 9.354 − 99 =
10. 10.589 − 48 =
11. 11.452 − 78 =
12. 12.116 − 79 =
13. 13.361 − 26 =
14. 14.230 − 26 =
15. 15.499 − 78 =
16. 16.420 − 87 =
17. 17.377 − 87 =
18. 18.212 − 36 =
19. 19.392 − 39 =
20. 20.562 − 37 =
21. 21.412 − 78 =
22. 22.536 − 68 =
23. 23.156 − 76 =
24. 24.279 − 99 =
25. 25.152 − 99 =
26. 26.268 − 78 =
27. 27.89 − 56 =
28. 28.207 − 46 =
29. 29.177 − 59 =
30. 30.582 − 19 =
31. 31.582 − 66 =
32. 32.329 − 27 =
33. 33.447 − 57 =
34. 34.177 − 67 =
35. 35.397 − 38 =
36. 36.477 − 36 =
37. 37.516 − 79 =
38. 38.186 − 98 =
39. 39.552 − 19 =
40. 40.249 − 79 =

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