A ratio is a mathematical statement that expresses the relative sizes of two quantities.
As an example, let's look at the triangles and circles below.
We can express the ratio of the number of circles to the number of triangles as follows:
To find this ratio, we start by counting the number of occurrences of each shape:
First, we count the number of circles. There are circles.
Next, we count the number of triangles. There are triangles.
Therefore, the ratio of circles to triangles is
We can describe this ratio in words as follows:
The ratio of circles to triangles is because there are circles for every triangles.
What ratio describes the number of pentagons to the total number of shapes?
We can express the ratio of the number of pentagons to the total number of shapes as follows:
To find this ratio, we start by counting the number of occurrences of each shape:
First, we count the number of pentagons. There are pentagons.
Next, we count the total number of shapes. There are shapes.
Therefore, the ratio of pentagons to total shapes is
What ratio describes the number of triangles to squares?
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a
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$4:1$ |
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b
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$4:5$ |
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c
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$1:4$ |
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d
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$4:3$ |
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e
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$3:4$ |
In the diagram above, the ratio of circles to the total number of shapes is
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a
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b
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c
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d
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e
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A merchant has black crates and green crates. What ratio describes the number of green crates to the total number of crates?
We can express the ratio of the number of green crates to the total number of crates as follows:
We compute our ratio as follows:
First, we count the number of green crates. There are green crates.
Next, we count the total number of crates. There are crates.
Therefore, the ratio of green crates to total crates is
To organize a field trip, there must be $1$ adult for every $10$ students. What ratio describes the number of students to the number of adults?
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a
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b
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c
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d
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e
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A bag contains $6$ green and $5$ red marbles. What ratio describes the number of red marbles to the total number of marbles?
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a
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$11:5$ |
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b
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$5:11$ |
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c
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$6:11$ |
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d
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$5:6$ |
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e
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$6:5$ |
The ratio of red marbles to blue marbles in a bag is What is the meaning of this ratio?
If the ratio of red marbles to blue marbles is it means that there are red marbles for every blue marbles.
From left to right, what are the missing numbers in the statement below?
The ratio of octagons to rectangles is $\fbox{$\phantom{0}$}:2\,$ because there are $\,\fbox{$\phantom{0}$}\,$ rectangles for every $4$ octagons.
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a
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$2$ and $2$ |
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b
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$3$ and $4$ |
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c
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$4$ and $2$ |
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d
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$2$ and $4$ |
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e
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$4$ and $3$ |
The ratio of male to the female members of a chess club is $2:3.$ What is the meaning of this ratio?
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a
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There are $3$ male members for every $2$ female members |
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b
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There are $2$ male members for every $5$ female members |
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c
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There are exactly $3$ male members and exactly $2$ female members |
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d
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There are $2$ male members for every $3$ female members |
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e
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There are exactly $2$ male members and exactly $3$ female members |