Write and solve one step equations addition and subtraction

Front

What is an equation?

Back

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

Front

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

Back

Isolating a variable means rearranging the equation so that the variable is on one side and all other terms are on the other side.

Front

What operation should be performed to isolate the variable y in the equation 20 = y + 7?

Back

Subtract 7 from both sides.

Front

What is the first step to solve the equation b - 10 = 5?

Back

Add 10 to both sides.

Front

What is the solution to the equation b - 10 = 5?

Back

b = 15.

Front

How do you write an equation for a word problem?

Back

Identify the unknown, assign a variable, and translate the words into a mathematical equation.

Front

If you have a collection of stamps and gave away 18 stamps, how do you represent the number of stamps you started with?

Back

Let s be the number of stamps you started with. The equation is s - 18 = 7.

Front

What is the solution to the equation s - 18 = 7?

Back

s = 25.

Front

What does the equation 6.8 = 2z + 2.2 represent?

Back

It represents a relationship where 6.8 is equal to twice a variable z plus 2.2.

Front

How do you solve the equation 6.8 = 2z + 2.2 for z?

Back

Subtract 2.2 from both sides and then divide by 2.