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Ratios
Rates
Equivalent Fractions
Algebra and Cross Products
Key Terms

100
Write the ratio 7:14 in simplest form.
What is 1:2?
100
This vocabulary word means "a rate that has a denominator of 1 unit".
What is a unit rate?
100
This vocabulary word means "an equation that states that two ratios are equivalent".
What is a proportion?
100
Use algebra to solve for h. h/8 = 3/12
What is 2?
100

A symbol that we assign to an unknown value usually represented by letters.

What is a variable.

200
Write the ratio 54/72 in simplest form.
What is 3/4?
200
We use this formula to find the average speed.
What is r = d/t
200
Solve for x using equivalent ratios. 5/6 = x/18
What is 15?
200
Use algebra to solve for m. 6/14 = m/21
What is 9?
200

Terms that differ only in their numerical coefficients are called.

What are like terms.

300
Write the ratio of the first measurement to the second measurement in the same unit. 3 qts, 2 gals
What is 3:8?
300
Find the unit rate. $15 for 2 plants
What is $7.50 per plant?
300
Solve for y using equivalent ratios. 5/7 = 45/y
What is 63?
300
Solve the proportion: 8 is to 3 as w is to 12
What is 32?
300

3x+4xy+5 is called an algebraic __________.

What is expression.

400
Compare the ratios: 9:15 ___ 8:20
What is greater than?
400

Find the unit rate. $30 for 3 bags of soil.

What is $10 / bag.

400
Solve for x using equivalent ratios. 4/36 = x/9
What is 1?
400
Use the cross products property to find z. 6.8/z = 2/5
What is 17?
400

Consists of two expressions separated by an equal sign: 4+6=5x2

What is an algebraic equation.

500
Find the value for x that makes the first ratio equivalent to the second ratio. x to 72, 5 to 8
What is 45?
500
Find the better buy. Cereal: 17 ounces for $3.40 or 14 ounces for$3.08
What is 17 ounces for $3.40?
500
Solve for x using equivalent ratios. 30/x = 12/16
What is 40?
500
Use the cross products property to find d. 6/9.6 = 9/d
What is 14.4?
500

A fixed quantity that does not change is called

What is a constant.