Video: Evaluating Numerical Expressions with Integer Exponents

Find the value of 5².

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Video Transcript

Find the value of five squared.

Five squared is calculated by multiplying five by five. Five multiplied by five is equal to 25. Therefore, five squared is equal to 25.

This method can be used to calculate five cubed, five to the power of four, or five to any power. Five cubed is equal to five multiplied by five multiplied by five. And five to the power of four is equal to five multiplied by five multiplied by five multiplied by five.

The exponent or index tells us how many fives we need to multiply. If the exponent is three, we need to multiply three fives. When the exponent is four, we need to multiply four fives. These two calculations give us answers of 125 and 625.

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