Equivalent expressions and what each form tells you
Grade 7 Math Worksheet
Circle the best answer, or write your answer on the line.
In each level, Pia wins x points from stars and loses 3 points to puddles. There are 4 levels. Which expression for all the levels shows the points from one level?
- 4(x − 3)
- 4x − 12
- 4x − 3
- -8x
In each level, Ren wins x points from stars and loses 2 points to puddles. There are 5 levels. Which expression counts the points from stars and the points lost separately, for all the levels?
- 5x − 2
- 5x − 10
- 5(x − 2)
- -5x
Each of Bo's 3 buckets holds x shells and 5 pebbles, so the total is 3x + 15. What does the 15 stand for?
- the pebbles in one bucket
- the number of buckets
- the shells in all 3 buckets
- the pebbles in all 3 buckets
Each level gives Esme x points and costs 5 points to puddles. After 4 levels the total is 4(x − 5). What does (x − 5) stand for?
- the number of levels
- the points from all 4 levels
- the points lost in one level
- the points from one level
Kira reads a puzzle painted on a castle wall. Kira writes 2.5x + 10 = 2.5(x + ?). What number replaces the question mark so the sides are equivalent?
Luz reads a puzzle by flashlight in a tent. Luz writes -3x + 12 = -3(x + ?). What number replaces the question mark so the sides are equivalent?
Milo solves a puzzle on the bus, bumps and all. Milo writes 3.5x + 14 = 3.5(x + ?). What number replaces the question mark so the sides are equivalent?
Noah finds a puzzle on top of the piano. Noah writes 5(x − 4) = 5x − ?. What number replaces the question mark so the sides are equivalent?
Pia ties a puzzle card to a kite. Pia writes 1.5(x + 6) = 1.5x + ?. What number replaces the question mark so the sides are equivalent?
Ren gets a puzzle from a toy rocket. Ren writes -3(x + 2) = -3x + ?. What number replaces the question mark so the sides are equivalent?