MODELING SIMPLE EQUATION USING BAR MODEL

What is the main purpose of using a bar model to solve equations?

• To guess the answer quickly

• To visually represent the relationship between quantities

• To replace algebraic symbols with pictures

• To make the problem harder

If a bar model represents the equation X+5 = 12 , what should the missing part (x) be?

• 7

• 5

• 12

• 17

Which equation best represents this bar model?

A bar is divided into two parts: one part is labeled "x" and the other part is labeled "8". The total length of the bar is labeled "20".

• X+8=20

• X-8=20

• X×8=20

• X÷8=20

A student used a bar model to solve 2x+4=10 . What should be the first step?

• Add 4 to both sides

• Divide both sides by 2

• Subtract 4 from both sides

• Multiply both sides by 2

What is an algebraic equation?

• A mathematical statement that contains numbers, variables, and an equality sign

• A mathematical phrase that only contains numbers and no variables

• A sentence that describes a mathematical idea in words.

• A collection of numbers and symbols without an equality sign.