Writing Equations

Writing Equations

Equations

• An Equation is a mathematical sentence that shows that two expressions are equivalent using an equal sign.

• An Equal sign shows that both sides of an equation have the same value.

Multiple Select

Identify equations: Select all answer choices that are equations

• 5 + 2 = 7

• 3 + w

• 40 = 4h

• 2m

Key Words

• Addition: add, sum, plus, more, make

• Subtraction: take away, less, decrease, minus, difference

• Multiplication: each, times, group of, multiply, product

• Division: divided, share, equal groups, quotient

• Equals: makes, total, same as, equivalent

How to identify parts of equations from words

• Circle Numbers

• Box Key Words

• Underline variables or unknowns

Multiple Choice

14 greater than a number g is 32

• 14 x g = 32

• 14 + g = 32

• 14 - g = 32

• g - 14 = 32

Multiple Choice

40 is equal to 5 times an unknown number

• 40 - 5n

• 40 = 5n

• 40/n = 5

• 40 - n = 5

Real-World

• You can write equations to help you solve real-world problems.

• When writing an equation from a real life situation it is important to identify the variable.

• Ex: 10 is greater than some number by 5.

• Variable: some number or x

Multiple Choice

Bill scored 13 points in a basketball game. His teammates (all together) scored x points. The total points for Bill's team was 44 points. What is the variable

• The number of points his teammates scored

• The number of points Bill scored

• The total number of points

Multiple Choice

Bill scored 13 points in a basketball game. His teammates (all together) scored x points. The total points for Bill's team was 44 points. Write an equation for this situation.

• 44 + 13 = x

• 13 + x = 44

• 44 + x = 13