Solving One-Step Equations with Addition and Subtraction Word Problems

Front

What is a one-step equation?

Back

A one-step equation is an algebraic equation that can be solved in one operation, such as addition or subtraction.

Front

How do you solve the equation x - 15 = -20?

Back

Add 15 to both sides: x = -20 + 15, so x = -5.

Front

What is the solution to the equation 2 + n = 16?

Back

Subtract 2 from both sides: n = 16 - 2, so n = 14.

Front

How do you solve the equation m - 5 = -10?

Back

Add 5 to both sides: m = -10 + 5, so m = -5.

Front

What equation represents the situation: Janna is 3 years older than Zak, and Janna is 12?

Back

The equation is z + 3 = 12.

Front

How do you solve the equation w + 14 = 10?

Back

Subtract 14 from both sides: w = 10 - 14, so w = -4.

Front

What does it mean to isolate a variable in an equation?

Back

Isolating a variable means to manipulate the equation so that the variable is on one side by itself.

Front

What is the first step to solve the equation x + 7 = 12?

Back

Subtract 7 from both sides: x = 12 - 7.

Front

What is the solution to the equation 5 + y = 20?

Back

Subtract 5 from both sides: y = 20 - 5, so y = 15.

Front

How do you represent the phrase 'three more than a number' in an equation?

Back

If the number is x, it can be represented as x + 3.