Add and subtract expressions with letters
Grade 7 Math Worksheet - Building Confidence

Circle the best answer, or write your answer on the line.
Read this first
Use this
Not to scale.
Bo opens an envelope that holds one tiny puzzle. In (3x + 1) + (2x + 6), the x pieces join to make 5x. What is the whole sum with as few terms as possible?
Esme puts on glasses to read very tiny print. In (5x + 2) + (x + 4), the x pieces join to make 6x. What is the whole sum with as few terms as possible?
Top row: 5 pieces labeled x, then a piece labeled 2. Bottom row: a piece labeled x, then a piece labeled 4. Not to scale. Top row: 5 pieces labeled x, then a piece labeled 2. Bottom row: a piece labeled x, then a piece labeled 4. Not to scale. Top row: 5 pieces x x x x x 2 x 4 Bottom row: Jun sharpens a pencil down to a stub for this puzzle. How would Jun write (3x + 4) + (2x + 7) with as few terms as possible?
Milo has one minute on the clock, and it ticks loudly. How would Milo write (7x + 9) − (3x + 4) with as few terms as possible?
Noah digs a puzzle card out of a backpack. How would Noah write (9x + 8) − (4x + 5) with as few terms as possible?
Pia writes the puzzle in blue pen, very boldly. How would Pia write (8x + 6) − (x + 2) with as few terms as possible?
Ren finds a puzzle hiding on the classroom calendar. Which expression is equal to (4x + 3) + (2x + 6)?
- 6x + 3
- 6x + 9
- 9x + 6
- 15x
Bo's bags each hold x pears. Crate A has 4 bags and 3 loose pears, crate B has 3 bags and 2 loose. How many pears in all, with as few terms as possible?
Esme's bags each hold x oranges. Crate A has 5 bags and 2 loose oranges, crate B has 2 bags and 4 loose. How many oranges in all, with as few terms as possible?
A yarn is 8x + 7 cm long. Kira cuts off 5x + 2 cm for a bracelet. How long is the yarn left, with as few terms as possible?