Subtraction Trick Worksheet

Speed calculation lesson 3: Same-change subtraction · Set 831 · 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. 1.157 − 58 =
2. 2.92 − 28 =
3. 3.418 − 88 =
4. 4.297 − 27 =
5. 5.156 − 69 =
6. 6.233 − 28 =
7. 7.520 − 86 =
8. 8.514 − 68 =
9. 9.104 − 68 =
10. 10.139 − 46 =
11. 11.301 − 88 =
12. 12.267 − 78 =
13. 13.506 − 87 =
14. 14.215 − 96 =
15. 15.112 − 19 =
16. 16.475 − 96 =
17. 17.225 − 27 =
18. 18.492 − 16 =
19. 19.471 − 69 =
20. 20.452 − 56 =
21. 21.469 − 96 =
22. 22.504 − 46 =
23. 23.380 − 38 =
24. 24.298 − 66 =
25. 25.211 − 17 =
26. 26.339 − 47 =
27. 27.321 − 37 =
28. 28.116 − 68 =
29. 29.95 − 88 =
30. 30.422 − 99 =
31. 31.572 − 49 =
32. 32.308 − 76 =
33. 33.189 − 69 =
34. 34.288 − 47 =
35. 35.443 − 56 =
36. 36.129 − 36 =
37. 37.359 − 76 =
38. 38.418 − 97 =
39. 39.178 − 76 =
40. 40.130 − 76 =

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