Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 342 · 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. 1.381 − 87 =
2. 2.228 − 68 =
3. 3.584 − 18 =
4. 4.566 − 37 =
5. 5.460 − 59 =
6. 6.181 − 26 =
7. 7.280 − 37 =
8. 8.406 − 18 =
9. 9.496 − 76 =
10. 10.534 − 37 =
11. 11.495 − 76 =
12. 12.420 − 57 =
13. 13.121 − 16 =
14. 14.542 − 86 =
15. 15.376 − 68 =
16. 16.544 − 68 =
17. 17.131 − 76 =
18. 18.466 − 57 =
19. 19.400 − 36 =
20. 20.474 − 36 =
21. 21.282 − 16 =
22. 22.566 − 56 =
23. 23.379 − 98 =
24. 24.160 − 47 =
25. 25.562 − 39 =
26. 26.542 − 77 =
27. 27.91 − 29 =
28. 28.490 − 27 =
29. 29.219 − 26 =
30. 30.185 − 19 =
31. 31.175 − 68 =
32. 32.108 − 28 =
33. 33.509 − 99 =
34. 34.92 − 69 =
35. 35.467 − 76 =
36. 36.190 − 87 =
37. 37.441 − 28 =
38. 38.166 − 69 =
39. 39.345 − 89 =
40. 40.334 − 48 =

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