There was a pencil sale going on at Carlos’s school. Carlos had 10 cents. He wanted to buy 3 pencils that cost 5 cents each. Which steps should Carlos take to find out if he can buy three pencils?

Jaciel's cat Kitty loved to eat tuna. He wanted to make sure that he had enough tuna for the whole week. Jaciel wants to know if Kitty ate ½ a can of tuna a day, how many cans would he need for a whole week. Jaciel does the following: 

Step 1 $$\frac{1}{2}\times\frac{7}{1}=\frac{7}{2}$$

Step 2 $$7\div2\ =3.5$$  

Why did Jaciel use 7 in his calculations? 

Tomailie was interested in going to the mall to buy some new clothes. Once she got there she purchased two shirts that cost $13.42 total. She started out with $40.00 and wants to know what percentage of her money she spent. In order to find the answer, Tomailie needs to divide the total cost by the amount of money she had. Which equation shows this?

Meily was interested in selling her father’s tools for their garage sale. Her father said she could sell 43% of the total tools. Meily ended up selling 12 tools. She can calculate how many tools Meily's father began with by calculating the following steps.

Step 1 $$\frac{12}{x}=\frac{43}{100}$$   Step 2  $$43x=1200$$   Step 3  $$\frac{43x}{43}=\frac{1200}{43}$$   Step 4  $$x=28$$  

What did Meily do in step 3 in order to find the final answer?

Helen was driving to another state to see her cousin. Helen drove ¼ of the way in the morning and 1/8 of the way at night. Helen wants to know what percentage of the trip she has left to drive the next day. First, Helen needs to add 1/4 and 1/8 together. Next, Helen will subtract this number from 1 to find his answer. Which answer shows the correct steps?

Ibrahim's sister Asawer is turning 48 in September. She is 3 times older than his brother Ahmad, and twice as old as Ibrahim. To find out Ahmad's age, divide Asawer's age by 3. Which equation could we use to find Ibrahim's age?

Jennifer was drawing a circle. The radius of the circle turned out to be 4 cm long. In order to find the circumference, Jennifer uses the following formula:

Circumference  $$=2\times3.14\times radius$$   She solves the problem and finds that $$2\times3.14\times4=25.12$$    What does the number 4 represent?

Bryan buys 6 shirts. For every shirt he purchases he gets one for 30% off. The normal price for each shirt is $20.00 dollars. Bryan wants to know how much money he spent. First, he finds the discounted price of one shirt. Next, he multiplies that number by six. Which answer shows the correct steps?

Ashley’s house was 30 ft long and 16 ft wide. Mayeli’s house was 40 ft long and 20 ft wide. Allizon wants to find the total area of both houses. First, she needs to find the area of Ashley's house. She uses the following formula for her calculations.

Area = Length x Width

Which equation shows how Allizon will calculate the area of Ashley's house?