Question

Ming drew the model below to represent the equation 24+12=_x(8+4) What is the missing value in Ming's equation?

Answer 1

Given:

The equation is:

$24+12=\_\_\times (8+4)$

To find:

The missing value.

Solution:

We have,

$24+12=\_\_\times (8+4)$           ...(i)

Taking left hand side, we get

$24+12=3\times 8+3\times 4$

Taking 3 common, we get

$24+12=3\times (8+4)$             ...(ii)

On comparing (i) and (ii), we get

Missing value = 3

Therefore, the missing value in the given equation is 3.