An orange costs $.09. How much would 2 dozen oranges cost?

Question

zupreisen14v · Accepted Answer

To begin with, since there are 12 of something in a dozen, two dozen oranges would be equivalent to 24 oranges (just simply multiply 12 by 2 in this case).
In addition, if each orange costs $0.09, you could multiply $0.09 by 24 to find the total cost, which would give you a result of $2.16.

Rylee Friedman · Accepted Answer

You might find it helpful to do things like this in your head if you consider another way to look at it. if that was your preference.

There is no reason why you should not write down a few numbers

but still do a lot of the working out in your head.

It takes much less time to do it than to explain it
The calculation we need to do is

24 \times $ 0.09

Let's explore another way of doing it ...
1 dozen is 12, so 2 dozen is

2 \times 12

But

12 = 10 + 2

Multiplying a number by 10 or 2 is much easier than multiplying by 12.

10 \times $ 0.09 = $ 0.90

12 \times $ 0.09 = \underset{―}{$ 0.18} \leftarrow add

$ 1.08

So

12 \times $ 0.09 = $ 1.08

So

24 \times $ 0.09 = 2 \times $ 1.08 = $ 2.16

An orange costs $.09. How much would 2 dozen oranges cost?

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