Question

Model with MathJen bought 4 tickets. Amber bought 5 tickets. The tickets cost $2 each. How much did the girls spend on tickets in all?1. What is the HIDDEN question you need to answer before you can solve the problem?2. Solve the problem. Make a bar diagrams. Show the equations you used.3. How would your equations change if Amber bought only 3 tickets? Explain.3rd grade student

Answer 1

Jen bought 4 tickets. Amber bought 5 tickets. The tickets cost $2 each.

How much did the girls spend on tickets in all?

1. The HIDDEN question is:

What is the total number of tickets Jen and Amber bought together?

2.

As the cost of the tickets is $2 each you multiply the number of tickets (t) by 2 to get the total cost (c):

Equation:

$c=2t$

Bar diagram:

Then, as Jen bought 4 tickets and Amber bought 5 tickets, They bought in total 9 tickets. The cost of all tickets was $18

t=9

$\begin{gathered} c=2t \\ c=2(9) \\ c=18 \end{gathered}$

3. If Amber bought only 3 tickets in total they bought (4+3= 7) seven tickets:

$\begin{gathered} c=2t \\ c=2(7) \\ c=14 \end{gathered}$