Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 874 · 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. 1.176 − 77 =
2. 2.451 − 17 =
3. 3.379 − 98 =
4. 4.113 − 66 =
5. 5.485 − 39 =
6. 6.548 − 69 =
7. 7.212 − 19 =
8. 8.363 − 98 =
9. 9.494 − 69 =
10. 10.137 − 86 =
11. 11.186 − 16 =
12. 12.129 − 98 =
13. 13.289 − 46 =
14. 14.126 − 48 =
15. 15.580 − 29 =
16. 16.319 − 18 =
17. 17.271 − 66 =
18. 18.330 − 97 =
19. 19.150 − 66 =
20. 20.516 − 77 =
21. 21.310 − 16 =
22. 22.74 − 19 =
23. 23.444 − 76 =
24. 24.256 − 19 =
25. 25.291 − 96 =
26. 26.408 − 19 =
27. 27.308 − 49 =
28. 28.334 − 37 =
29. 29.266 − 29 =
30. 30.412 − 96 =
31. 31.579 − 98 =
32. 32.378 − 28 =
33. 33.92 − 37 =
34. 34.521 − 16 =
35. 35.245 − 48 =
36. 36.486 − 46 =
37. 37.135 − 37 =
38. 38.458 − 49 =
39. 39.247 − 47 =
40. 40.119 − 29 =

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