Big Ideas Expressions

Solve: 2 x (4^2 - 5)

2 X (four to the second power - 5)

• 22

• 2

• 11

• 21

Evaluate the expression 3x + 5 when x = 2.

• 15

• 11

• 7

• 10

Evaluate the expression 2y - 7 when y = 4.

• 3

• 15

• 10

• 1

Evaluate the expression 4a - 2b when a = 3 and b = 1.

• 10

• 8

• 12

• 6

• 15 plus y

• 15 times y

• y added to 15

• y less than 15

For a monthly family cookout, David buys 3 packages of hot dogs and 4 packages of hamburger patties. Hot dog packages each contain x hot dogs. Hamburger packages each contain y hamburger patties. Complete the expressions for the total number of hot dogs and hamburger patties David buys for 6 cookouts. 

6( ​ (a)   x + ​ (b)   y)

​ (c)   x + ​ (d)   y

• 3

• 4

• 18

• 24

• 7

the product of two and a number

• 2 + n

• 2 - n

• 2n

• 2÷n

Choose the algebraic expression that matches the verbal phrase.

• A) x + y

• B) x - y

• C) x * y

• D) x / y

Write an algebraic expression for:
the product of 5 and a number

• 5 + n

• n + 5

• 5n

• 5/n

What is an algebraic expression?

• a letter or a symbol used to represent an unknown value

• an expression that contains one or more variables and may also contain an operation symbol such as + or -

• a specific number whose values does not change