Expressions and Equations Assessment A Review

• 33

• 25

• 16

• 15

Answer explanation

Answer explanation

Four students write math expression using exponents, as shown in the picture. Which student's expression has a value of 0?

• Kevin

• Lola

• Manuel

• Nina

Answer explanation

• 8 + 10

• 16 + 25

• (81-25) + (4-9)

Answer explanation

• 5 + 6

• 5+5+5+5+5+5

Answer explanation

An exponent means repeated MULTIPLICATION.

Which expression(s) represent the sum of 3 and n? Choose two (2).

• 3n

• 3 + n

• n + 3

• n+n+n

Which can be represented by the expression 17 - 2x?

• 17 less than twice a number x

• the difference between 17 and twice a number x

• a number x squared, subtracted from 17

• 17 less than a number x squared

Select the box in each row to match the description with the expression that represents it.

• 5 times the quotient of a number and 3

• 3n + 5

• The sum of 3 and 5 times a number n

• (3+5)n

• 5 more than 3 times a number

• 5n - 3

• the difference of 5 times a number and 3

Sam is 4 years younger than twice his brother’s age. Which expression could be used to find Sam’s age if "x" represents his brother’s age?

• 4x - 2

• 2x - 4

• 4 - 2x

• 2 - 4x

Which expression represents 11 less than the sum of y and 13?

• 11 + (y - 13)

• 11 - (y +13)

• (y - 13) + 11

• (y + 13) - 11