Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 399 · 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. 1.501 − 16 =
2. 2.560 − 68 =
3. 3.97 − 36 =
4. 4.379 − 37 =
5. 5.295 − 16 =
6. 6.197 − 48 =
7. 7.192 − 49 =
8. 8.410 − 46 =
9. 9.177 − 26 =
10. 10.516 − 19 =
11. 11.432 − 56 =
12. 12.162 − 68 =
13. 13.272 − 66 =
14. 14.320 − 18 =
15. 15.384 − 88 =
16. 16.315 − 37 =
17. 17.563 − 28 =
18. 18.367 − 37 =
19. 19.119 − 16 =
20. 20.594 − 86 =
21. 21.109 − 67 =
22. 22.306 − 26 =
23. 23.57 − 28 =
24. 24.333 − 56 =
25. 25.181 − 29 =
26. 26.498 − 46 =
27. 27.224 − 68 =
28. 28.402 − 39 =
29. 29.274 − 16 =
30. 30.594 − 77 =
31. 31.101 − 78 =
32. 32.405 − 69 =
33. 33.290 − 56 =
34. 34.175 − 18 =
35. 35.239 − 16 =
36. 36.146 − 69 =
37. 37.354 − 76 =
38. 38.210 − 16 =
39. 39.327 − 19 =
40. 40.431 − 19 =

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