# Rational numbers and powers

What is the result of 0.1/0.01 + 0.01/0.001 + 0.001/0.0001=?

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#### Solution Preview

First, we can convert these rational numbers into powers.

0.1 = 10^-1

0.01 = 10^-2

0.001 = 10^-3

0.0001 = ...

#### Solution Summary

This shows how to work with decimals.

$2.19