Understanding equations and solutions

Front

What is an equation?

Back

A mathematical sentence stating that two expressions are EQUAL.

Tags

CCSS.6.EE.A.2C

Front

What is the solution of the equation 2y = 30?

Back

y = 15.

Tags

CCSS.6.EE.B.7

Front

Which equation has x=9 as a solution? 4 + x = 12, 5x = 45, 2x = 20, x + 7 = 26

Back

5x = 45.

Tags

CCSS.6.EE.B.5

Front

What is the inverse operation of division?

Back

Multiplication.

Tags

CCSS.4.NBT.B.6

Front

In the expression 8r − 3, what is the variable?

Back

r.

Tags

CCSS.6.EE.A.2B

Front

What does it mean for two expressions to be equal?

Back

It means they have the same value.

Front

What is a variable in mathematics?

Back

A symbol used to represent an unknown value.

Tags

CCSS.6.EE.A.2B

Front

What is the purpose of solving an equation?

Back

To find the value of the variable that makes the equation true.

Tags

CCSS.7.EE.B.4A

Front

What is the first step in solving the equation x + 5 = 12?

Back

Subtract 5 from both sides.

Tags

CCSS.6.EE.B.7

Front

What is the solution to the equation 3x = 21?

Back

x = 7.

Tags

CCSS.6.EE.B.7