Fractions Unit 2 Understanding equivalent fractions
These numbers are called fractions
Here are some mixed numbers
Today’s lesson looks at Equivalent fractions
WALT : to understand equivalent fractions and decide if fractions are equal
In the word equivalent there is the root word equal
Fractions which are said to be equivalent are equal to each other
For example
So if you were given 2 quarters of a cake and your friend was given half a cake would you both have the same amount?
Yes! These fractions are equal These are equivalent fractions.
Can you tell if the following fractions are equal? Are they equivalent fractions?
Yes these fractions are equal. They are equivalent fractions
Are they equivalent fractions?
Yes they are equivalent fractions
Are they equivalent fractions?
Yes they are equivalent fractions
Are they equivalent fractions?
No, they are not equal. They are not equivalent fractions
Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal?
Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal ?
Here are some equivalent fractions. Can you work out a strategy for deciding whether they are equal?
Use thinking time to discuss
Use thinking time to discuss
What ideas have you come up with?
Explain your strategy to the class
There is a relationship between the fractions using dividing and multiplying
What ever you do to the top number.. You must do to the bottom number
What ever you do to the top number.. You must do to the bottom number divide by 5
What ever you do to the top number.. You must do to the bottom number divide by 2
What ever you do to the top number.. You must do to the bottom number divide by 3
What ever you do to the top number.. You must do to the bottom number divide by 4
What ever you do to the top number.. You must do to the bottom number divide by 2
What ever you do to the top number.. You must do to the bottom number multiply by 3
What ever you do to the top number.. You must do to the bottom number multiply by 2
What is the missing number?
What is the missing number? 4 4 8
What is the missing number?
Well done
Sometimes you might need to work out equivalent fractions in three steps