Variables Mixed Review

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.

Front

What does the equation 23 + t = 40 represent?

Back

It represents the total number of ornaments Belle has after purchasing t additional ornaments.

Front

How do you solve for t in the equation 23 + t = 40?

Back

Subtract 23 from both sides: t = 40 - 23, so t = 17.

Front

What does the equation 4t = 12 mean?

Back

It means that 4 times an unknown value t equals 12.

Front

How do you find the value of t in the equation 4t = 12?

Back

Divide both sides by 4: t = 12 ÷ 4, so t = 3.

Front

In the equation 7 + j = 15, what does j represent?

Back

j represents the unknown value that, when added to 7, equals 15.

Front

How do you solve for j in the equation 7 + j = 15?

Back

Subtract 7 from both sides: j = 15 - 7, so j = 8.

Front

What does the equation 30 - t = 17 represent?

Back

It represents the number of books Brooklyn has left after her puppy chewed through t books.

Front

How do you find t in the equation 30 - t = 17?

Back

Subtract 17 from 30: t = 30 - 17, so t = 13.

Front

What does the equation 42 ÷ 7 = x represent?

Back

It represents the number of pizzas each person receives when 42 people equally split 7 pizzas.