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23/24 EHE L11 Yr 10 - Ratio & Proportionality
Jeremy Day
Created on October 16, 2023
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Lesson 11 - Ratio & PRoportionality
1. List all the factors of 122. What is true about a scalene triangle? 3. 3/5 × 4/7 4. Expand 3 ( 4p - 5 ) 5. √25 - √16 6. Convert 75ml into L 7. What is the formula for the Area of a Circle? 8. - 5 - - 6 + - 10
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Quizizz
05
Simplifying Ratios. The easiest, but mistakes are often made.
04
Combining two separate ratios into one, usually 3-way, ratio.
03
Working out an unknown given the ratio and a difference.
02
One part of the ratio is given, you need to find the other.
01
Sharing an amount in a given ratio.
You can break most ratio questions down into 5 different types
Ratio
01
Sharing an amount in a given ratio.
Sue and Jane win the lottery. They win £47 and share the winnings in the ratio 2:3 How much does each person get?
Ratio
02
One part of the ratio is given, you need to find the other.
A model of a house has a scale 1:100. The height of the model is 8cm. How tall is the house in metres?
Ratio
03
Working out an unknown given the ratio and a difference.
Jo, Doug and Phil share sweets in the ratio 1 : 4 : 3 Phil gets 40 more than Jo. How many does Phil get?
Ratio
04
Combining two separate ratios into one, usually 3-way, ratio.
To make a purple paint the ratio of red to blue paint is 1 : 4 The ratio of blue to white paint is 3 : 1 What is the ratio of red to blue to white paint?
Ratio
05
Simplifying Ratios. The easiest, but mistakes are often made.
Write down the number of left-handed girls to right-handed girls as a ratio. Give your answer in its simplest form.
Here is some information about a group of children.
Ratio
Ratio
2) When I harvested my apples I found some had been eaten by wasps, some were rotten and some were good. These were in the ratio 6 : 5 : 25. Eighteen of my apples had been eaten by wasps. a) What percentage of my apples were rotten? b) How many good apples did I get?
1) The soft drinks Coke, Orange and Vimto were bought for the school disco in the ratio 10 : 5 : 3. The school bought 80 cans of Orange. a) How much Coke did they buy? b) How much Vimto did they buy?
Ratio
Proportionality
https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing
https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing
https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing
https://drive.google.com/file/d/1cw-5LkBKjywGEAnNUU7bDLDsUHd4x1ia/view?usp=sharing