Question

There are 55 rows of seats on the ground floor of an auditorium and 23 rows of seats on the balcony of the auditorium. Each row has 16 seats. How many seats are in the auditorium?

Answer 1

Multiplication is repeating addition.

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We add 16+16+⋯(total 55 times) to get the total seats on the ground floor of the auditorium.

We add 16+16+⋯(total 23 times) to get the total number in the balcony of the auditorium.

In total, we are adding 16+16+⋯(total 78 times).

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$16\times 78=1248$

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Hence 1248 seats.

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Division is repeating subtractions.

Equation of division

$\rm{A=BQ+R}$

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Let's interpret this into words. If we keep subtracting $\rm{B}$ eventually we will subtract $\rm{Q}$ times and $\rm{R}$ will be left.

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So, for example, $\rm{78\div 7=11\cdots 1}$ means the same as $78=7\times 11+1$.

Answer 2

Answer:

the answer is

Step-by-step explanation:

since there are 16 seats in an auditorium,
there are 55+23= 78 rows in the auditorium
therefore, there are 78 x 16 = 1248 seats in an auditorium