Module 6.1

Math Response

A loaf of bread that serves 6 people calls for $$1\ \frac{1}{2}$$ cups of all purpose flour and $$\frac{5}{6}$$ cup of chickpea flour. You want to make the loaf of bread so that it serves 9 people. How much flour altogether will you need?

Type answer here

Correct Answer: 3\frac{1}{2}

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I Can write and evaluate expressions involving rational numbers and name the properties used.

Math Response

Stefan has 5 ounces of chlorine, and he needs to find out whether that is enough chlorine for two swimming pools. The amount of chlorine per gallon that Stefan will add is shown.

One pool has volume 1,721.25 cubic feet, and the other has volume 1,998.75 cubic feet. There are about 7.5 gallons per cubic foot.

Write and evaluate an expression for the number of gallons in both pools.

Type answer here

Correct Answer: 27900

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Math Response

Stefan has 5 ounces of chlorine, and he needs to find out whether that is enough chlorine for two swimming pools. The amount of chlorine per gallon that Stefan will add is shown.

One pool has volume 1,721.25 cubic feet, and the other has volume 1,998.75 cubic feet. There are about 7.5 gallons per cubic foot.

Write and evaluate an expression for the number ounces of chlorine needed for both pools.

Type answer here

Correct Answer: 3.627

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Math Response

Evaluate the following expression:

$$\frac{4}{7}\left(-\frac{3}{5}\right)\cdot\frac{5}{3}\left(-\frac{9}{10}-\frac{3}{10}\right)$$

Type answer here

Correct Answer: \frac{24}{35}

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Open Ended

A model car club has 6 oz. of white paint. They give $$\frac{1}{3}$$ of the paint to the craft club. The amount of paint used in each car is shown in the image. Write and evaluate an expression to find the number of cars they can paint. Use the order of operations.

Math Response

Sarah buys 8 packages, each with 20 balloons, and uses $$\frac{1}{4}$$ of them to decorate the hall. Write and evaluate an expression to find how many balloons Sarah has left.

Type answer here

Correct Answer: 120

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Math Response

Suresh has 4 coupon books, each with 6 coupons. He keeps 1/3 of the coupons and gives the rest away. Fifty percent of those he keeps are for the movie theater. How many movie theater coupons does he have?

Type answer here

Correct Answer: 4

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Math Response

To get to her music lesson, Natasha pays $1.25 in bus fare. After her lesson, she buys a snack for $2.12 and pays another $1.25 in bus fare. She has four music lessons a week.  Write and evaluate an expression showing her weekly costs for transportation and snacks.

Type answer here

Correct Answer: 18.48

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