*RECIPROCAL*: Reffered to

**multiplicative inverse**. When 1 is divided by x, multiplyed by x, it will gived the product of 1.

**Zero**

*does not*have a reciprocal.

How reciprocal is used in math: Reciprocal is quicker and easier than dividing fractions. Reciprocal is also used when you are doing ratio tables.

What is the reciprocal of 3/1? It's 1/3, we just flip the numerators and denominators.

**EXAMPLES:**

**The ratio table**

Here, I'll show you 3/4 divided by 2/5 using a ratio table.

**QUESTIONS:**

1)

**3/4 divided by 3/5**This question means... How many groups of

**3/5**are in**3/4**?The reciprocal of 3/5 is 5/3, and the reciprocal of 3/4 is 4/3.

The answer is going to be more than 1 because 3/4 is larger than 3/5.

2)

**3/5 divided by 3/4**This question means... How many groups of

**3/4**are in**3/5**?The reciprocal of 3/4 is 4/3, and the reciprocal of 3/5 is 5/3.

The answer is going to be less than 1 because 3/5 is smaller than 3/4.

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