SOL 5.19 Algebra and Variables

Front

What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents a number that can change or vary.

Front

What does the equation 20 - m = 5 represent?

Back

It represents a situation where Bob had 20 Pokemon cards, gave some away, and now has 5 left.

Front

How do you write an equation for the total number of ornaments in boxes?

Back

The equation is 4 × b = 36, where b is the number of boxes.

Front

What does the equation 8x = 64 mean?

Back

It means that eight teams have a total of 64 pens, and each team has the same number of pens.

Front

What is the product of a number and 5 if it equals 25?

Back

The equation is 5 x a = 25, where a is the number.

Front

In the equation 6x = 150, what does x represent?

Back

x represents the number of hours Nick worked last week.

Front

What is an equation?

Back

An equation is a mathematical statement that shows that two expressions are equal.

Front

What is the purpose of solving an equation?

Back

The purpose is to find the value of the variable that makes the equation true.

Front

What does it mean to isolate a variable?

Back

To isolate a variable means to get the variable alone on one side of the equation.

Front

What is a mathematical expression?

Back

A mathematical expression is a combination of numbers, variables, and operations without an equality sign.