Problem Solving with Rational Numbers and Operations

A recipe calls for 1/2 cup of sugar and 1/3 cup of cinnamon. What is the measure of the two ingredients combined?

• 5/6 cup
• 2/5 cup
• 1/6 cup
• 1/5 cup

The temperature was 3* C on Monday and was 7.5 degrees lower the next day. What was the temperature on Tuesday?

• 10.5* C
• 4.5* C
• -4.5* C
• -10.5* C

If a plant grows 1/4 cm every day for 21 days, what is the total amount of growth?

• 82 cm
• 25 cm
• 17 1/4 cm
• 5 1/4 cm

After a pizza party there are 4 2/3 pizzas left over. If the pizzas are divided so that party goers can take home 1/6 of a pizza, how many guests can take home pizza?

• 26 guests
• 28 guests
• 8 guests
• 33 guests

 A girl's hair is 12 3/8 inches long. If she has 2 1/2 inches cut off, how long will her hair be?

• 10 1/4 inches
• 10 3/16 inches
• 9 7/8 inches
• 10 7/8 inches

A roll of cookie dough is 8.4 inches long. If we want to cut out 12 equal sections to make 12 cookies, how long will each section be?

• .7 inches
• 7 inches
• .07 inches
• 3.6 inches

A room is 3.4 m wide and 2.6 m long. What is the perimeter of the room?

• 6 m
• 6 m²
• 12 m
• 12 m²

Given the same room as in the previous question (3.4 m wide and 2.6 m long) what is the area of the room?

• 6 m²
• .8 m²
• 1.31 m²
• 8.84 m²