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Multiplying Fractions
Multiplying Fractions
Your Turn...
3 1/2 x 4/6 =
2 3/4 x 1/7 =
2 1/6 x 3/4 =
How would you solve this?
Discuss...
1. Convert any mixed numbers into improper
fractions
2. Multiply the numerators together
3. Multiply the denominators together
4. Simplify the answer and convert back to
a mixed number
2 1/6 x 3/4 =
3/4 1/2
How do we do it?
Multiplying Fractions
Let's Practise...
That's too easy!!!
Questions on the board
How would you do this one?
3/4 2/5
1. Switch the second fraction
2. Multiply the numerators together
3. Multiply the denominators together
4. Simplify the answer.
Have a go at the ones on the board
Dividing Fractions
Your turn
:
3/4 - 2/5
4/5 - 2/3
1. Switch the second fraction
2. Multiply the numerators together
3. Multiply the denominators together
4. Simplify the answer.
3/4 1/2
How do we do it?
1. Convert any mixed numbers into improper
fractions
2. Multiply the numerators together
3. Multiply the denominators together
4. Simplify the answer and convert back to
a mixed number or simplify the fraction
Maths - Fractions
Thursday 7th July 2016
What next?
Blue - independent
Learning Check...
Red - quick chat before independent (simplify)
Yellow and green - GH
4/8 3/5
20/24
12/40
5/6
1/3
3,2,1 hold up the card which matches the answer...
Pre-Learning
What is 4/6 + 1/5?
Pre-Learning
What is 4/5 - 1/3 ?
26/30
5/11
3/2
3/5
5/6
13/15
7/15
7
3,2,1 hold up the card which matches the answer...
Pre-Learning
What is 3 2/7 as an improper fraction?
Learning Check...
What is 2 1/4 x 3/7?
Let's have a look at this...
6/7
32/7
What is 3 2/5 x 3/6 ?
5 4/28
27/28
A recipe for making cakes uses 2 3/4 of a cup of flour, you are making 1/2 the recipe, how much flour do you need?
1 21/30
3 6/30
23/7
5/7
2 4/28
1/4
1 7/10
6/8
3,2,1 hold up the card which matches the answer...
How could we solve this?
3,2,1 hold up the card which matches the answer...
Today you will be
working with...
What next?
Can you try this one?
Blue - independent
Sarah had 1 2/3 of a cup of sugar, she uses 3/4 of the sugar to make biscuits, how much did she have left?
Red - quick chat before independent (simplify)
Did you get 1 3/12 or 1 1/4?
Yes - independent activity
No - GH
Yellow and green - GH
Pre-Learning
What is 1/7 + 3/7?
18
4/7
2/7
4/14
3,2,1 hold up the card which matches the answer...