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2 to the second power means 2x2 (also written as 2^2) which equals 4. The big number is what you’re actually multiplying and the small number at the top (exponent/power) is how many times you’re multiplying it.
Three Fifths is not a whole number it's only 60% of a whole.
A whole fraction is when the numerator and denominator have the same number.
To turn 13 percent into a whole number, you need to multiply 13 by 100 to convert it to a decimal form. This gives you 0.13. To convert this decimal into a whole number, you need to multiply it by a power of 10 that will shift the decimal point two places to the right. Therefore, multiplying 0.13 by 100 gives you 13 as a whole number.
Yes. The square of a whole number is always a whole number. For example, 3 squared is 9, so the square root of 9 is 3. What you never have, is the square root of a whole number being a fraction that is not a whole number. The square root of a whole number is either a whole number or an irrational number. For example, the square root of 2 is irrational, because there are no 2 whole numbers a and b such that a/b squared is 2. This is not terribly difficult to prove, but I have already said too much; I have answered your question.