12/3 7th grade

Front

What is the constant of proportionality?

Back

The constant of proportionality is a constant value that relates two proportional quantities. In this case, it is $9.

Front

What percentage of 20 blocks are cubes if 16 are cubes?

Back

80% of the blocks are cubes.

Front

If the sales tax rate is 7.25%, how much tax do you pay on a $120 coat?

Back

You would pay $128.70 for the coat including tax.

Front

Simplify: 3a + 2b + 5a

Back

The simplified expression is 8a + 2b.

Front

Evaluate a + 6 when a = 2

Back

The result is 8.

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100.

Front

How do you calculate sales tax?

Back

To calculate sales tax, multiply the price of the item by the sales tax rate.

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by combining like terms.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value.