How it works
This hanger diagram worksheet shows twelve balanced hangers. A triangle marked x is an unknown weight, and a round weight carries its number. Find x on the first nine, then name the equation each of the last three shows.
Read the full guide
Read a hanger as an equation
A hanger hangs level when both sides weigh the same, so the level bar works like an equals sign. One x and a 4 on the left with a 9 on the right is x + 4 = 9.
Find x
Take the same weight off both sides and the hanger stays level. Take 4 off each side of x + 4 = 9, and x = 5 is left. When x hangs on both sides, take one x off each side first.
Questions and answers
What is a hanger diagram in math?
A picture of a balanced hanger with weights on its two sides. It stands for an equation: the weights on the left equal the weights on the right, and a shape with a letter is an unknown weight.
How do you solve a hanger diagram?
Change both sides in the same way until one x is alone. For two x and a 1 balancing a 7, take 1 off each side to get 2x = 6, then halve both sides: x = 3.
How do you write an equation from a hanger diagram?
Add up what hangs on the left, write an equals sign for the level bar, then add up the right. Two x and a 3 on the left with a 25 on the right is 2x + 3 = 25.
Does the worksheet come with answers?
Yes. Print the answer key gives the numbered sheet with the answer for every hanger listed under it. On screen, Quiz yourself on this worksheet checks each answer as you give it.