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

Circle the best answer, or write your answer on the line.
Not to scale. Ari finds a riddle card tucked in a lunchbox. In (2x + 3) + (4x + 5), the x pieces join to make 6x. What is the whole sum with as few terms as possible?
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?
Kira copies a puzzle onto paper, then doodles a cat in the corner. How would Kira write (4x + 1) + (3x + 8) 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?
Ren finds a puzzle hiding on the classroom calendar. Which expression is equal to (4x + 3) + (2x + 6)?
- 6x + 9
- 6x + 3
- 9x + 6
- 15x
A friendly robot hands Tala a puzzle with a beep. Which expression is equal to (5x + 2) + (3x + 4)?
- 10x + 4
- 8x + 6
- 8x + 2
- 14x
Zee starts the timer, and it beeps like a chicken. Which expression is equal to (2x + 7) + (6x + 1)?
- 15x + 1
- 8x + 8
- 8x + 7
- 16x
Ari's bags each hold x apples. Crate A has 3 bags and 2 loose apples, crate B has 2 bags and 5 loose. How many apples 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?