7th Grade Math STAAR Review

Front

What does the equation 7 = 127 - 5b represent in a real-world scenario?

Back

It represents a situation where there were 7 players left over after 127 rugby players were divided into 5 teams with b players on each team.

Tags

CCSS.7.EE.B.4A

Front

How do you calculate the cost of oil used if 60% of a 25-ounce bottle costing $5.88 is used?

Back

First, calculate 60% of 25 ounces: 0.6 * 25 = 15 ounces. Then, find the cost per ounce: $5.88 / 25 = $0.2352 per ounce. Finally, multiply the cost per ounce by the amount used: $0.2352 * 15 = $3.53.

Tags

CCSS.7.EE.B.3

Front

What inequality represents how many hours Sam needs to work to buy a laptop costing $550 if he earns $10.25 per hour?

Back

10.25h ≥ 550; Sam needs to work at least 54 hours.

Tags

CCSS.6.EE.B.8

Front

How do you calculate the interest earned on a $300 investment at 4% interest after 1 year?

Back

Interest = Principal x Rate = $300 x 0.04 = $12.

Tags

CCSS.7.RP.A.3

Front

What is the mode of a data set?

Back

The mode is the number that appears most frequently in a data set.

Tags

CCSS.6.SP.B.5C

Front

What is the mean of a data set?

Back

The mean is the average of all numbers in a data set, calculated by dividing the sum of the numbers by the count of numbers.

Tags

CCSS.6.SP.B.5C

Front

How do you find the difference between the mode and the mean of a data set?

Back

Calculate the mode and mean separately, then subtract the mean from the mode.

Front

What is a variable in mathematics?

Back

A variable is a symbol used to represent an unknown value, often denoted by letters such as x or y.

Tags

CCSS.6.EE.A.2B

Front

What is an equation?

Back

An equation is a mathematical statement that asserts the equality of two expressions, typically containing variables.

Tags

CCSS.6.EE.A.2C

Front

What is a percentage?

Back

A percentage is a fraction expressed as a part of 100, used to compare relative sizes.