Knowledge Check-Algebraic Expressions

Identify the coefficient in the expression.

5h + 9

• 5

• h

• 9

• 4

• 1

• 2

• 7

• h

Identify the variables in the expression.

3z + 4 + 5s

• z, s

• 3, 4

• 3, 5

• 3z, 4, 5s

Identify the terms in the expression.

3d + 8

• 3d, 8

• 3, 8

• d

• 8

• 5r

• r

• 5 x r

Evaluate the expression when a=4.

a + 7

• 47

• 4

• 11

• 3

Evaluate the expression when b=2 and c=8.

bc

• 28

• 2

• 10

• 16

Write the phrase as an expression.

The sum of 25 and 14.

• 25 + 14

• 39

• 25 - 14

• 25 x 14

Write the phrase as an expression.

A number x multiplied by 3.

• 3

• x + 3

• x * 3

• 5 * 3

Use the distributive property to simplify the expression.

7(x+3)

• 7x + 3

• 10x

• 7x + 21

• x + 21