Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 672 · 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. 1.578 − 38 =
2. 2.549 − 29 =
3. 3.367 − 37 =
4. 4.533 − 66 =
5. 5.182 − 59 =
6. 6.184 − 78 =
7. 7.279 − 66 =
8. 8.134 − 96 =
9. 9.69 − 68 =
10. 10.527 − 16 =
11. 11.547 − 18 =
12. 12.539 − 88 =
13. 13.474 − 67 =
14. 14.402 − 28 =
15. 15.100 − 97 =
16. 16.172 − 78 =
17. 17.172 − 88 =
18. 18.379 − 58 =
19. 19.97 − 27 =
20. 20.384 − 59 =
21. 21.83 − 67 =
22. 22.593 − 16 =
23. 23.152 − 57 =
24. 24.212 − 97 =
25. 25.140 − 29 =
26. 26.517 − 39 =
27. 27.183 − 88 =
28. 28.353 − 37 =
29. 29.213 − 18 =
30. 30.91 − 19 =
31. 31.167 − 96 =
32. 32.261 − 39 =
33. 33.264 − 16 =
34. 34.430 − 59 =
35. 35.300 − 98 =
36. 36.526 − 66 =
37. 37.281 − 66 =
38. 38.178 − 57 =
39. 39.104 − 68 =
40. 40.191 − 78 =

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