Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 748 · 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. 1.153 − 49 =
2. 2.424 − 17 =
3. 3.408 − 69 =
4. 4.476 − 16 =
5. 5.565 − 68 =
6. 6.186 − 49 =
7. 7.163 − 46 =
8. 8.547 − 56 =
9. 9.561 − 49 =
10. 10.257 − 17 =
11. 11.541 − 97 =
12. 12.54 − 16 =
13. 13.464 − 57 =
14. 14.252 − 46 =
15. 15.315 − 96 =
16. 16.397 − 68 =
17. 17.348 − 36 =
18. 18.167 − 96 =
19. 19.124 − 46 =
20. 20.355 − 38 =
21. 21.271 − 68 =
22. 22.521 − 16 =
23. 23.558 − 26 =
24. 24.425 − 88 =
25. 25.431 − 28 =
26. 26.155 − 36 =
27. 27.200 − 59 =
28. 28.210 − 59 =
29. 29.271 − 78 =
30. 30.73 − 67 =
31. 31.353 − 79 =
32. 32.511 − 96 =
33. 33.139 − 47 =
34. 34.314 − 37 =
35. 35.417 − 18 =
36. 36.533 − 36 =
37. 37.577 − 17 =
38. 38.211 − 29 =
39. 39.427 − 17 =
40. 40.379 − 37 =

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