When dividing by a power of ten, move the decimal point to the left by as many places as there are 0s in the power of 10.
For example, let's calculate:
175.321 ÷ 100
Here, we observe that there are two zeros in 100.
So, move the decimal point two places to the left.
175.321 ÷ 100 = 1.75321
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The correct answer is
The smallest number is the one that comes first while counting.
To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.
21 is the smallest number.