Mastering Ratios and Proportions for 7th Grade Math

This video tutorial covers the concepts of ratios, rates, and proportions. It begins with an introduction to ratios, explaining how to write and simplify them. The tutorial then moves on to proportions, demonstrating how to solve them using multiplication relationships and cross multiplication. Next, it covers unit rates, showing how to calculate the rate for one unit of a given quantity. Finally, the video explains measurement conversion using proportions, providing examples for clarity.

What is the simplified ratio of long sleeve shirts to total shirts in one grab bag?

• 2 to 3

• 1 to 3

• 3 to 1

• 1 to 2

What is the ratio of teenagers who do not prefer YouTube to those who do, in simplified form?

• 1 to 2

• 2 to 1

• 9 to 18

• 18 to 9

What is the simplified ratio of teenagers who prefer YouTube?

• 18 to 27

• 2 to 1

• 3 to 4

• 2 to 3

If 4 over 5 equals x over 25, what is the value of x?

• 20

• 25

• 5

• 10

How many bakers does Tasty Sweets employ?

• 16

• 21

• 14

• 16.5

What is the price per pound of the watermelon?

• $5.00

• $14.40

• $4.50

• $3.20

How many fence posts are needed to make one foot of fencing?

• 1.6

• 8

• 32

• 5

What is the unit rate of fence posts per foot of fencing?

• 8 posts per 5 feet

• 960 posts per 600 feet

• 1.6 posts per foot

• 32 posts per 20 feet

How many feet are in 21 yards?

• 84

• 21

• 63

• 7

If Jimmy is 12 miles away from the school, how many kilometers is this?

• 12

• 24

• 19.2

• 7.5