Exploring Proportions in EGP Writing and Solving

Mrs. Vandenberg teaches how to write and solve proportions through various examples. The lesson covers setting up proportions, identifying labels, and using cross products or multiplicative relationships to find solutions. Problems include calculating costs, maintaining ratios, and estimating distances, with a focus on understanding and applying proportional reasoning.

What is the first step in solving a proportion problem?

• Ignore the labels

• Guess the answer

• Read the problem and pick out important information

• Write the final answer

Tags

CCSS.7.RP.A.2C

In the first problem, what is the cost of 7 quarts of milk?

• $8.00

• $5.00

• $6.93

• $7.50

Tags

CCSS.6.RP.A.3B

What are the labels used in the first problem?

• Quarts and dollars

• Liters and cents

• Gallons and dollars

• Quarts and cents

Tags

CCSS.6.RP.A.3D

In the second problem, how many adults are needed for 140 children?

• 26

• 24

• 22

• 20

Tags

CCSS.6.RP.A.3B

What are the two labels in the second problem?

• Children and teachers

• Children and adults

• Adults and teachers

• Children and students

Tags

CCSS.RL.8.7

CCSS.RL.7.7

CCSS.RI.7.7

CCSS.RI.8.7

CCSS.RL.9-10.7

In the third problem, what is the cost of 8 magazine subscriptions?

• $60.00

• $63.96

• $62.50

• $65.00

Tags

CCSS.6.RP.A.3B

What is the multiplicative relationship used in the third problem?

• Times 2

• Times 3

• Times 4

• Times 5

Tags

CCSS.5.OA.B.3

In the fourth problem, how far does the glacier move in 80 hours?

• 28 inches

• 25 inches

• 26 inches

• 27 inches

Tags

CCSS.6.RP.A.3B

What does the word 'about' signify in the fourth problem?

• Exact answer

• Estimate

• Approximation

• None of the above

Tags

CCSS.RI.7.4

CCSS.RL.6.4

CCSS.RL.8.4

CCSS.RI.9-10.4

CCSS.RL.9-10.4

What are the labels used in the fourth problem?

• Feet and minutes

• Inches and hours

• Feet and hours

• Inches and minutes

Tags

CCSS.6.NS.B.3