Chapter 3 Practice Test

Evaluate the expression c – a when a = 5 and c = 25.

• 21

• 8

• 20

• 19

Evaluate the expression a • b when a = 5 and b = 17.

• 30

• 87

• 85

• 86

Write the phrase "the quotient of 6 and a number n" as an expression.

• 6/n

• 6n

• n/6

• 6 + n

Write the phrase "3 increased by a number x" as an expression.

• 3 + x

• 3x

• x + 3

• 3 • x

Simplify the expression 3(5x).

• 15

• 3x

• 15x

• 5x

Simplify the expression 15 + (18 + p).

• 33 + p

• 33p

• 15 + p

• 18 + p

Write the phrase "the sum of 8 and a number n" as an expression.

• 8 + n

• 8n

• n + 8

• 8 • n

Simplify the expression 12 + (15 + p).

• 27 + p

• 27p

• 12 + p

• 15 + p

Evaluate the expression d – b when b = 7 and d = 19.

• 12

• 26

• 18

• 13

Write the phrase "the difference between 10 and a number x" as an expression.

• 10 - x

• 10x

• x - 10

• 10 • x