Evaluating Expressions

Choose the correct expression for the phrase “subtract 17 from x.”

• x - 17

• 7x

• 17-x

• 17/x

Choose the correct expression “subtract 17 from x” if x = 20

• x - 17 = 20 - 17

• 17 - x = 17 - 20

• 17x = 17 (20)

• 17/x = 17 / 20

Evaluate the expression “subtract 17 from x” if x = 20

• x - 17 = 20 - 17 = 3

• 17 - x = 17 - 20 = -3

• 17x = 17 (20) = 340

• 17/x = 17 / 20 = 0.85

Choose the correct algebraic expression when z = 5

8z + 12 - z²

• 8z + 12 - z² = 8(5) + 12 + (5 *5)

• 8z + 12 - z² = 8(5) + 12 - (5 *5)

Evaluate the correct algebraic expression when z = 5

8z + 12 - z²

• 40 + 12 - 25 = 77

• 40 + 12 - 25 = 27

Write the algebraic expression for 7y - 3x when x = 2 and y = 5?

• 7(5) - 3(2)

• 7(2) - 3(5)

Evaluate the algebraic expression for 7y - 3x when x = 2 and y = 5?

• 7(5) - 3(2) = 35 - 6 = 29

• 7(2) - 3(5) = 14 - 15 = -1

What is the value of 7y - 3x when x = 2 and y = 5?

• 1

• 29

• 41

• 4

Perry went to the store and bought 9 boxes of marbles. Then, he gave away 105 marbles to his friends. If each box of marbles contains 16 marbles, how many marbles does Perry have left?

Write the expression 9m – 105 to evaluate.

• 9m - 105 = 9(16) - 105

• 9m - 105 = 9 + 16 - 105

Perry went to the store and bought 9 boxes of marbles. Then, he gave away 105 marbles to his friends. If each box of marbles contains 16 marbles, how many marbles does Perry have left?

Evaluate the expression 9m – 105 to evaluate.

• 9m - 105 = 9(16) - 105 = 39

• 9m - 105 = 9 + 16 - 105 = -80