How long is 33 inches added to 4 feet 7 inches?

Aug 21, 2016

It is $88$ inches or $7$ feet and $4$ inches.

Explanation:

As each feet has $12$ inches, $4$ feet have 4×12=48 inches. Hence $4$ feet and $7$ inches are $48 + 7 = 55$ inches

and adding $33$ inches to $4$ feet and $7$ inches is $33 + 55 = 88$ inches.

Now as $12$ inches equal to one foot and 88=7×12+4, we can also write $88$ inches as $7$ feet and $4$ inches.

Oct 1, 2016

$7 \text{ feet " and 4 " inches }$

Explanation:

You cannot add number which are in different units, so something has to be converted.

Let's convert $\text{ } 33$ inches to feet and inches and then add.

$1 \text{ foot " = 12 " inches}$

$33$ inches = (24 + 9 ) inches = 2 feet and 9 inches (24+9)

$\textcolor{w h i t e}{\times \times x} \text{feet" color(white)(xx)"inches}$

$\textcolor{w h i t e}{\times \times \times} 4 \textcolor{w h i t e}{\times \times} 7$
$\textcolor{w h i t e}{\times x . x} \underline{+ 2 \textcolor{w h i t e}{\times \times} 9}$
$\textcolor{w h i t e}{\times \times \times x} \textcolor{w h i t e}{\times x} \cancel{16} \text{ }$add the inches first. It is more than 12!!
$\textcolor{w h i t e}{\times \times \times} \underline{1 \textcolor{w h i t e}{\times \times} 4} \text{ }$ 16 inches to feet and inches. $\left(16 = 12 + 4\right)$
$\textcolor{w h i t e}{\times \times \times} 7 \textcolor{w h i t e}{\times \times} 4 \text{ }$ now add the feet

Answer: $7 \text{ feet " and 4 " inches }$