7th Grade Math Review

Front

How many outfits can you create with 2 pairs of jeans, 5 t-shirts, and 2 pairs of shoes?

Back

20 outfits (Using the Fundamental Counting Principle: 2 jeans x 5 t-shirts x 2 shoes = 20 outfits.)

Front

What is the probability of rolling a 15 on a standard number cube?

Back

Impossible (A standard number cube has numbers 1-6, so rolling a 15 is impossible.)

Front

If the distance between two towns on a map is 2.6 cm and the scale is 1 cm:50 km, what is the actual distance?

Back

130 km (2.6 cm x 50 km/cm = 130 km.)

Front

True or False: Rational numbers include integers, fractions, and terminating and repeating decimals.

Back

True (Rational numbers are defined as numbers that can be expressed as a fraction of two integers.)

Front

A rectangular garden is 45 ft wide and 70 ft long. If the width on a blueprint is 9 in, what is the length on the blueprint?

Back

14 in (Using the scale: 45 ft corresponds to 9 in, so 70 ft corresponds to 14 in.)

Front

What is the Fundamental Counting Principle?

Back

It states that if one event can occur in 'm' ways and a second can occur independently in 'n' ways, then the two events can occur in m x n ways.

Front

Define a rational number.

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Front

What is the formula for the area of a rectangle?

Back

Area = length x width.

Front

If a number cube has 6 sides, what is the probability of rolling an even number?

Back

1/3 (The even numbers are 2, 4, and 6, which are 3 out of 6 possible outcomes.)

Front

What is a scale in mapping?

Back

A scale is a ratio that compares a distance on the map to the actual distance it represents.