Rational Numbers

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Information about Rational Numbers

Published on September 4, 2008

Author: sadiesattic

Source: slideshare.net

Rational Numbers +, -, x, /

Vocabulary to Define Real Numbers Rational Numbers Irrational Numbers Reciprocal 06/04/09 PH 01-06 Bitsy Griffin

Real Numbers

Rational Numbers

Irrational Numbers

Reciprocal

Rational Numbers Any number that can be written as a ratio Examples: 5/9 -2 .75 - 06/04/09 PH 01-06 Bitsy Griffin

Any number that can be written as a ratio

Examples:

5/9

-2

.75

-

Writing Fractions 0/# is ok #/0 NOT ok Undefined 06/04/09 PH 01-06 Bitsy Griffin

0/# is ok

#/0 NOT ok

Undefined

Reciprocal Multiplicative inverse Flip Product of reciprocals is 1 What’s the reciprocal of? 06/04/09 PH 01-06 Bitsy Griffin

Multiplicative inverse

Flip

Product of reciprocals is 1

What’s the reciprocal of?

Ordering Rational Numbers Find decimal equivalents Put the original #s in order 06/04/09 PH 01-06 Bitsy Griffin

Find decimal equivalents

Put the original #s in order

Calc Tips -> + Mixed #s When you have a fraction that looks like this: Use the parentheses on your calculator like this: 06/04/09 PH 01-06 Bitsy Griffin

When you have a fraction that looks like this:

Use the parentheses on your calculator like this:

Calc Tips -> - Mixed #s When you have a fraction that looks like this: Use the parentheses on your calculator like this: 06/04/09 PH 01-06 Bitsy Griffin

When you have a fraction that looks like this:

Use the parentheses on your calculator like this:

Review What is a fraction No No? What is the product of reciprocals? How can you order fractions easily? What calculator tip do you need to follow for mixed numbers? 06/04/09 PH 01-06 Bitsy Griffin

What is a fraction No No?

What is the product of reciprocals?

How can you order fractions easily?

What calculator tip do you need to follow for mixed numbers?

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