Question

Ming drew the model below to represent the equation 24 + 12 = blank x (8 + 4). A model with 3 rows of 8 and 3 rows of 4. What is the missing value in Ming's equation?

Answer 1

The answer is A: 3

Explanation:

Answer 2

Given:

The equation is:

`24+12=\_\_* (8+4)`

A model with 3 rows of 8 and 3 rows of 4.

To find:

The missing value in Ming's equation.

Solution:

We have,

`24+12=\_\_* (8+4)` ...(i)

A model with 3 rows of 8 and 3 rows of 4. Using this information, we get

`24+12=3* 8+3* 4`

Taking out the common factor 3, we get

`24+12=3* (8+4)` ...(ii)

On comparing (i) and (ii), we get the missing value is 3.

Therefore, the missing value in Ming's equation is 3.