Pre-Algebra Assessment

a + a + a + a

• a + 4 

• 4a 

• a to the fourth power 

• 4a + 4 

2r + 2 + 5r - 2 + r 

• 8r 

• 8r - 4 

• 12r 

• 7r + 4 + r 

3 + 12c - 4c 

• 16c + 3 

• 8c + 3 

• 5c 

• 8c 

3x - 2x - x

• 6x

• x

• 0

• 5x

Variable terms are called "variable" because:

• they are pretty.

• they never change.

• they vary (change).

• they don't have letters.

• 35x+7
• 35x-1
• 35x-7
• -35x-7

5(a + 6)

• 5a + 6

• a + 30

• 5a + 30

• 5a - 30

If x=5,find the value of 7x-1

• 34

• 36

• 35

If y=4,find the value of 3y+5

• 27

• 12

• 17

If a=6 and b= 7,find the value of 15-a-b

• 2

• 3

• 4