Representing ratio in different ways | Maths | Quizalize & Oak National Academy

Starter quiz

Which image can be described by this statement 'For every 3 birds there are 4 squirrels'?
Write a sentence using 'for every' to describe this image
- For every 2 triangles there are 3 circles
- For every 3 triangles there are 2 circles ✓
- For every 9 triangles there are 6 circles ✓
- For every three triangles there are 3 circles
$What does the number 8 in this equation <Math>2 \times 4 = 8</Math> represent in relation to this image?$

What does the number 8 in this equation $2 \times 4 = 8$ represent in relation to this image?
- 'The total number of circles' ✓
$What does the number 4 this equation <Math>3 \times 4 = 12</Math> represent in relation to this image?$

What does the number 4 this equation $3 \times 4 = 12$ represent in relation to this image?
- 'The pattern is shown 4 times' ✓
$What does the number 12 this equation <Math>3 \times 4 = 12</Math> represent in relation to this image?$

What does the number 12 this equation $3 \times 4 = 12$ represent in relation to this image?
- 'The number of triangles' ✓
$What does the number 20 this equation <Math>5 \times 4 = 20</Math> represent in relation to this image?$

What does the number 20 this equation $5 \times 4 = 20$ represent in relation to this image?
- 'The total number of shapes' ✓

Which statment matches this image?
- For every 1 orange marble there are 3 blue marbles
- For every 3 orange marbles there are 2 blue marbles
- For every 3 blue marbles there are 2 orange marbles
- For every 3 orange marbles there is 1 blue marble ✓
Which of the images show a 'many to many' ratio?
- For every 2 orange marbles there are 3 blue marbles ✓
- For every 1 orange marble there are 2 blue marbles
- For every 2 blue marbles there are 5 orange marbles ✓
- For every 3 orange marbles there is 1 blue marble
What multiplication would you use to work out the missing number? If there are 12 blue marbles, there will be __ orange marbles.
- $5 \times 2 = 10$
- $2 \times 3 = 6$
- $2 \times 4 = 8$ ✓
- $5 \times 4 = 20$
Which equation represents the total number of marbles?
- $5 \times 2 = 10$
- $2 \times 3 = 6$
- $2 \times 4 = 8$
- $5 \times 4 = 20$ ✓
A recipe uses 3 eggs for every 4 spoons of sugar. If you use 15 eggs, how many spoons of sugar will you need?
- 25
- 20 ✓
- 19
- 16
A recipe uses 3 eggs for every 4 spoons of sugar. If you use 40 spoons of sugar, how many eggs will you need?
- 39
- 70
- 40
- 30 ✓

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Bar models can represent unequal sharing or many to many sharing.
Representations show the relationship between the two variables.
The representation helps to identify the calculations needed to solve the problem.

Using addition and subtraction rather than multiplication and division to solve problems.

Continue to model the use of the language and notation of multiplication to calculate missing values.

Many to many - Use many to many to describe ratios where each value is more than one