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Three examples of front end estimation

User Collin James
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Answer:

In front-end estimation, we replace the original number with a number that's close by but only has one non-zero digit. For example, 20, 300, -50, 1,000, 80,000. Take the number 32; the choices to replace it with are 30 or 40 (they both have only one non-zero digit)

Explanation:

User TLW
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Answer: 20, 300, -50, 1,000, 80,000. Take the number 32; the choices to replace it with are 30 or 40 (they both have only one non-zero digit).

Step-by-step explanation: In front-end estimation, we replace the original number with a number that's close by but only has one non-zero digit.

User Sangcheol Choi
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