Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 207 · 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. 1.100 − 18 =
2. 2.367 − 49 =
3. 3.141 − 68 =
4. 4.330 − 66 =
5. 5.254 − 67 =
6. 6.481 − 56 =
7. 7.416 − 66 =
8. 8.119 − 59 =
9. 9.103 − 86 =
10. 10.331 − 19 =
11. 11.424 − 88 =
12. 12.385 − 26 =
13. 13.315 − 97 =
14. 14.583 − 49 =
15. 15.185 − 87 =
16. 16.79 − 26 =
17. 17.463 − 87 =
18. 18.106 − 16 =
19. 19.588 − 88 =
20. 20.75 − 19 =
21. 21.325 − 67 =
22. 22.66 − 46 =
23. 23.447 − 87 =
24. 24.265 − 46 =
25. 25.95 − 29 =
26. 26.167 − 19 =
27. 27.171 − 17 =
28. 28.325 − 26 =
29. 29.356 − 97 =
30. 30.189 − 67 =
31. 31.385 − 27 =
32. 32.159 − 66 =
33. 33.249 − 87 =
34. 34.183 − 18 =
35. 35.471 − 99 =
36. 36.347 − 16 =
37. 37.430 − 98 =
38. 38.444 − 49 =
39. 39.122 − 18 =
40. 40.137 − 16 =

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