# Comparing and Order Fractions with Unlike Denominators

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Comparing and Order Fractions with Unlike Denominators

Comparing Fractions Part 1: Review Part 2: Lesson

FOCUS QUESTION: What symbols do we use when we compare fractions?

Symbols means ______________________. > < =

FOCUS QUESTION: How do we compare fractions with different denominators?

There are two ways to compare fractions with different denominators.

If fractions do not have the same denominators, we need to find a common multiple and multiply to get the bottoms the same. 2 3 4 8 Copyright © 2013 Kelly Mott

Another way to compare fractions is to use the butterfly method and cross multiply.

FOCUS QUESTION: How do we find the fraction with the greatest value in a set?

To find the fraction with the greatest value, you must first make all the fractions have a common denominator. Circle the fraction with the greatest value. 7 2 9 10 5 10 Copyright © 2013 Kelly Mott

To find the fraction with the greatest value, you must first make all the fractions have a common denominator. Circle the fraction with the greatest value. 3 2 2 8 4 6 Copyright © 2013 Kelly Mott

To find the fraction with the greatest value, you must first make all the fractions have a common denominator. Circle the fraction with the greatest value. 4 6 7 6 12 10 Copyright © 2013 Kelly Mott

To find the fraction with the greatest value, you must first make all the fractions have a common denominator. Circle the fraction with the greatest value. 3 4 12 10 5 20 Copyright © 2013 Kelly Mott

To find the fraction with the greatest value, you must first make all the fractions have a common denominator. Circle the fraction with the greatest value. 4 1 7 6 3 12 Copyright © 2013 Kelly Mott

FOCUS QUESTION: How do we put fractions in order from greatest to least?

To put fractions in order from greatest to least, find the common denominator. Then list from big to small. Order from Greatest to Least: 2 1 3 5 3 10 Copyright © 2013 Kelly Mott

To put fractions in order from greatest to least, find the common denominator. Then list from big to small. Order from Greatest to Least: 3 5 1 4 8 2 Copyright © 2013 Kelly Mott

To put fractions in order from greatest to least, find the common denominator. Then list from big to small. Order from Greatest to Least: 2 2 7 4 3 12 Copyright © 2013 Kelly Mott

FOCUS QUESTION: How do we put fractions in order from least to greatest?

To put fractions in order from least to greatest, find the common denominator. Then list from small to big. Order from Least to Greatest: 4 1 3 12 3 4 Copyright © 2013 Kelly Mott

To put fractions in order from least to greatest, find the common denominator. Then list from small to big. Order from Least to Greatest: 4 1 5 12 3 6 Copyright © 2013 Kelly Mott

To put fractions in order from greatest to least, find the common denominator. Then list from big to small. Least to Greatest: 3 12 5 5 20 10 Copyright © 2013 Kelly Mott

PRACTICE: Word Problems

1. Amy’s math notebook weighs ½ pound, her science notebook weighs 7/8 pound, and her history notebook weighs ¾ pound. What are the weights in order from lightest to heaviest? Question: Steps: Solve: Answer in Words: Copyright © 2013 Kelly Mott

2. Carl has three picture frames
2. Carl has three picture frames. The thicknesses of the frames are 4/5 inch. 3/12 inch, and 5/6 inch. What are the thicknesses in order from least to greatest? Question: Steps: Solve: Answer in Words: Copyright © 2013 Kelly Mott