# Math

Which of the expressions is not equivalent to 1/25?

A. 5^3×5^-5
B. 5^-1×5^-1
C. 5^-3×5
D. 5^-2×5^4

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1. Online, “*” is used to indicate multiplication to avoid confusion with “x” as an unknown.

1/25 = 5^-2

When multiplying a particular number, you add the exponents.

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2. 50+225

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3. 1/25

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4. C) 5^-3 x 5. Is not equivalent to 1/25

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