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How do you find the additive and multiplicative inverse of 1.25?

1 Answer

Aug 5, 2017

The additive inverse of $1.25$ is $-1.25$

The multiplicative inverse of $5/4$ is $4/5$

Explanation:

Additive inverses have the same number, but opposite signs.
Their sum is $0$

The additive inverse of $1.25$ is $-1.25$

Multiplicative inverses are also called reciprocals.
One is the upside-down fraction of the other,
Their product is $1$ .
$1.25 = 1 1/4 = 5/4$

The multiplicative inverse of $5/4$ is $4/5$

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