Proportions and Word Problems

This video tutorial from MooMooMath and Science explains how to solve proportion word problems. It begins with basic examples, such as buying cans of tuna and packages of chips, and progresses to more complex problems like currency exchange and purchasing broccoli. The video demonstrates setting up proportions, cross-multiplying, and solving for unknowns, emphasizing the importance of consistent units in fractions. The tutorial concludes with a reminder to practice kindness.

What is the first step in solving a proportion word problem?

• Add the numbers together

• Divide both sides by the same number

• Set up a proportion with consistent units

• Cross-multiply the numbers

If one can of tuna costs $2, how many cans can you buy with $10?

• 6 cans

• 5 cans

• 3 cans

• 4 cans

What is the correct proportion setup for buying cans of tuna?

• 1/10 = 2/x

• 1/2 = x/10

• x/2 = 10/1

• 2/1 = 10/x

How many packages of chips can you buy for $9 if one costs $3?

• 4 packages

• 3 packages

• 5 packages

• 2 packages

What is the first step in solving the chip package problem?

• Divide both sides by the same number

• Set up a proportion with consistent units

• Add the numbers together

• Cross-multiply the numbers

If the exchange rate is $3 for 2 dinars, how many dollars do you get for 22 dinars?

• $39

• $36

• $33

• $30

What is the correct proportion setup for the currency exchange problem?

• 3/2 = x/22

• 2/3 = 22/x

• 22/3 = x/2

• x/3 = 22/2

How many bunches of broccoli can you buy for $18 if four bunches cost $9?

• 9 bunches

• 8 bunches

• 6 bunches

• 7 bunches

What is the correct proportion setup for the broccoli purchase problem?

• 4/9 = x/18

• 9/4 = 18/x

• x/9 = 18/4

• 4/18 = x/9

What is the final step in solving a proportion word problem?

• Add the numbers together

• Divide both sides by the same number

• Set up a proportion with consistent units

• Cross-multiply the numbers