Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 263 · 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. 1.305 − 86 =
2. 2.161 − 99 =
3. 3.514 − 87 =
4. 4.64 − 39 =
5. 5.401 − 66 =
6. 6.313 − 59 =
7. 7.341 − 76 =
8. 8.97 − 58 =
9. 9.178 − 87 =
10. 10.308 − 96 =
11. 11.198 − 99 =
12. 12.411 − 16 =
13. 13.276 − 16 =
14. 14.104 − 59 =
15. 15.568 − 78 =
16. 16.590 − 59 =
17. 17.158 − 96 =
18. 18.79 − 66 =
19. 19.403 − 79 =
20. 20.565 − 19 =
21. 21.318 − 46 =
22. 22.318 − 36 =
23. 23.272 − 67 =
24. 24.480 − 99 =
25. 25.349 − 67 =
26. 26.264 − 68 =
27. 27.365 − 17 =
28. 28.225 − 29 =
29. 29.187 − 79 =
30. 30.199 − 96 =
31. 31.575 − 19 =
32. 32.248 − 36 =
33. 33.376 − 66 =
34. 34.316 − 66 =
35. 35.594 − 16 =
36. 36.155 − 19 =
37. 37.213 − 89 =
38. 38.174 − 27 =
39. 39.561 − 38 =
40. 40.451 − 27 =

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