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

1 Answer
EZ as pi
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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