1st Semester Study Guide

Front

What expression represents the distance a shark swims in x hours if it swims at 18 miles per hour?

Back

18x

Front

If the ratio of boys to girls in a class is 3 to 4 and there are 28 girls, how many boys are there?

Back

21 boys

Front

How many people would be seated in each row if there are 88 rows and 2,200 tickets sold?

Back

25

Front

Solve the expression: 42/6 (2+3) + 7 – 3

Back

32

Front

What is a unit rate?

Back

A unit rate is a comparison of two different quantities when they are combined together. For example, if Alaina pays 10 for 5 pencils, the unit rate is 2 per pencil.

Front

What is the formula to calculate distance?

Back

Distance = Speed × Time

Front

If a car travels at a speed of 60 miles per hour for 2 hours, how far does it travel?

Back

120 miles (60 miles/hour × 2 hours)

Front

What is the formula for finding the average in a set of numbers?

Back

Average = (Sum of all values) / (Number of values)

Front

If there are 30 students in a class and the ratio of boys to girls is 2:3, how many boys are there?

Back

12 boys (2/5 of 30)

Front

What is the definition of a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.