Unit 2 : Lessons 6 through 10

A recipe for one batch of cookies uses 5 cups of flour and 2 teaspoons of vanilla.

Which is the double number line diagram to show the amount of flour and vanilla needed for 1, 2, 3, 4, and 5 batches of cookies.

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Each of these cats has 2 ears, 4 paws, and 1 tail.

Which is a double number line diagram that represents a ratio in the situation.

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What is a sentence describing this group of 3 cats?

• There are 2 ears per every 2 tails.

• There is one tail per every 4 ears.

• There are 4 paws per every 2 ears.

• There are 8 paws per every 3 tails.

Here is a double number line showing that it costs $3 to buy 2 bags of rice.

At this rate, how many bags of rice can you buy with $12?

• 4

• 6

• 8

• 10

Here is a double number line showing that it costs $3 to buy 2 bags of rice.

Find the cost per bag. Remember 10 bags cost $15.

• $1.50

• $1.25

• $2.50

• $2.00

Andre ran 2 kilometers in 16 minutes, and Jada ran 3 kilometers in 27 minutes.

Both ran at a constant speed. Did they run at the same speed? Explain your reasoning.

• Andre ran faster. 16 divided by 2 is 8. 27 divided by 3 is 9. 8 is greater than 9. That's how long for one kilometer.

• Jade ran faster. 27 divided by 3 is 9. 16 divided by 2 is 8. 9 is greater than 8. That's how long for one kilometer.

• They ran the same speed. 16 divided by 2 is 8. 27 divided by 3 is 9. 8 is equal to 9. That's how long for one kilometer.

• There is not enough information to answer the question.