Question

Three friends meet to share their rock collections:Each child painted three rocks and sold them at a craft show. Answer the following questions:1. How many rocks did the children sell altogether? Write a multiplication equation to help you. 2. Each rock sells for $5.00. How much money did they make altogether? Draw a bar diagram to help you.

Answer 1

SOLUTION

(1) Three friends painted three rocks each and sold them. The number of rocks these three friends sold althogether is

$\begin{gathered} 3\text{ friends }\times\text{ 3 rocks, that is } \\ 3\times3=9 \\ \text{which is 9 rocks } \end{gathered}$

So, the answer is 9 rocks.

(2) Since each rock sold for $5.00, that is

The bars above show the 9 rocks the children sold. So, from the bar diagram,

$\begin{gathered} 5+5+5+5+5+5+5+5+5=45 \\ or \\ 5\text{ dollars }\times\text{ 9 rocks } \\ 5\times9=45 \end{gathered}$

Hence, the answer is $45.00