Evaluating Algebraic Expressions through Substitution

What is the term used for symbols that can change depending on the question?

• Exponents

• Pronumerals

• Constants

• Coefficients

If a = 4 and b = 3, what is the value of a * b?

• 9

• 15

• 7

• 12

Given a = 3 and b = 5, what is the value of a^2 + b?

• 17

• 16

• 14

• 15

What is the value of 3^2?

• 6

• 9

• 12

• 15

If a = 6 and b = 2, what is the value of 2a - 5b?

• 4

• 6

• 8

• 2

What is the result of (-2)^2?

• -4

• 2

• 4

• -2

What is the result of (-4) * (-3)?

• -12

• 7

• 12

• -7

If a = -1 and b = -2, what is the value of a^2 - b^2?

• -1

• 1

• 3

• -3

What is the value of (-1) + (-2)?

• 3

• 1

• -3

• -1

If a = -1 and b = -2, what is the value of (a + b) / (a - b)?

• 1

• 3

• -1

• -3