1989 AJHSME Problems/Problem 4
Contents
[hide]Problem
Estimate to determine which of the following numbers is closest to .
Solution 1
is around and is around so the fraction is approximately
Solution 2
Using scientific notation estimated to the first significant digit, we see the numerator rounds to . Subtracting the exponents gives . The answer choice that has zeros to the right of the significant digit is
See Also
1989 AJHSME (Problems • Answer Key • Resources) | ||
Preceded by Problem 3 |
Followed by Problem 5 | |
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