1989 AMC 8 Problem 3 — Solution | LIVE by Po-Shen Loh

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1989 AMC 8 Problem 3

Below is the professionally curated solution for Problem 3 of the 1989 AMC 8, from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 1989 AMC 8 solutions, or check the answer key.

All problems are used with official legal permission of the Mathematical Association of America (MAA).

Concepts:decimal place value

Difficulty rating: 450

3.

Which of the following numbers is the largest?

$.99$

$.9099$

$.9$

$.909$

$.9009$

Solution:

Write each number with four decimal places: $.9900,$ $.9099,$ $.9000,$ $.9090,$ $.9009.$

Comparing from the left, $.9900$ has the largest hundredths digit, so $.99$ is the largest.

Thus, the correct answer is A .

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Problem 3 in Other Years

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