Solving Proportions 6th grade

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How do you find the missing number in a proportion?

Back

Cross Multiply (Cross Product) the two ratios.

Front

If the ratio of fast songs to slow songs is 9 to 3, what does this mean?

Back

For every 9 fast songs, there are 3 slow songs, which can also be simplified to a ratio of 3:1.

Front

What is the first step to solve a proportion?

Back

Set the two ratios equal to each other.

Front

What does cross multiplying involve?

Back

Multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If 36 fast songs correspond to how many slow songs in a 9:3 ratio, how do you calculate it?

Back

Set up the proportion: 9/3 = 36/x and solve for x, which equals 12.

Front

What is the solution for x in the proportion 3/4 = x/20?

Back

x = 15.

Front

How do you check if two ratios are equivalent?

Back

Cross multiply and see if the products are equal.

Front

What is the total weight of 15 bags of groceries if each bag weighs 3 pounds?

Back

Total weight = 15 bags * 3 pounds/bag = 45 pounds.

Front

If 15 bags weigh 45 pounds, how much do 7 bags weigh?

Back

7 bags weigh 21 pounds.