Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 372 · 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. 1.560 − 16 =
2. 2.66 − 19 =
3. 3.143 − 29 =
4. 4.134 − 56 =
5. 5.584 − 28 =
6. 6.179 − 18 =
7. 7.512 − 77 =
8. 8.337 − 86 =
9. 9.412 − 78 =
10. 10.393 − 69 =
11. 11.419 − 36 =
12. 12.444 − 56 =
13. 13.399 − 46 =
14. 14.190 − 27 =
15. 15.595 − 16 =
16. 16.595 − 86 =
17. 17.322 − 97 =
18. 18.171 − 67 =
19. 19.384 − 97 =
20. 20.93 − 67 =
21. 21.218 − 49 =
22. 22.532 − 69 =
23. 23.109 − 87 =
24. 24.318 − 17 =
25. 25.457 − 69 =
26. 26.440 − 58 =
27. 27.172 − 86 =
28. 28.262 − 69 =
29. 29.361 − 26 =
30. 30.459 − 38 =
31. 31.571 − 38 =
32. 32.148 − 18 =
33. 33.505 − 26 =
34. 34.494 − 59 =
35. 35.562 − 48 =
36. 36.206 − 39 =
37. 37.374 − 28 =
38. 38.456 − 36 =
39. 39.403 − 38 =
40. 40.361 − 66 =

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