Question

What is the fastest method to find which of $\frac {3\sqrt {3}-4}{7-2\sqrt {3}} $ and $\frac {3\sqrt {3}-8}{1-2\sqrt {3}} $ is bigger manually?

score 531 · Answer 1 · 2016-06-22 06:10:37

531

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What is the fastest method to find which of $\frac {3\sqrt {3}-4}{7-2\sqrt {3}} $ and $\frac {3\sqrt {3}-8}{1-2\sqrt {3}} $ is bigger manually?

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527

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List Question

What is the fastest method to find which of $\frac {3\sqrt {3}-4}{7-2\sqrt {3}} $ and $\frac {3\sqrt {3}-8}{1-2\sqrt {3}} $ is bigger manually?

Mental Math - Estimating Logarithms

How to factor 5671?

Faster mental arithmetic with powers of 10

Mental estimate for tangent of an angle (from $0$ to $90$ degrees)

Mental Math: Finding Square Roots to 1 Decimal Point

Understanding how This Works (shortcut for squaring $2$ digit numbers mentally)

Flies caught by 100 spiders in 100 minutes

Fastest way to multiply numbers mentally?

Remembering numbers while performing calculations mentally

Mental division of two fractions?

(Quickly) finding the smallest fraction

Why doesn't $26\times 24 = 25\times 25?$ (I remove and $+1$ from both numbers)

Proof behind this mental math multiplication?

Mentally generating a (pseudo)random {0,1}-sequence with uniform distribution

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