Multiplicative Inverse
 Lesson
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The multiplicative inverse is  known as the reciprocal of a number.
(Otherwise known as "flipping the number upside down.")

Examples:

The multiplicative inverse of 2 is 1 .
2
The multiplicative inverse of 10 is 1 .
10
The multiplicative inverse of ¼ is 4 .
1
The multiplicative inverse of ⅝ is 8 .
5




Advanced  Thinking  
 


A number multiplied by its multiplicative inverse always equals the multiplicative identity
The Multiplicative Identity is 1 because it always gives us our original number back as the result.

 
 
2 * 1/2 = 1 -1/21 * -21 = 1
 7.5*1/7.5  =1 -1/61.5 * -61.5 = 1
4 * 1/4  = 1 -18/5 * -5/18 = 1


 

  
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