Evaluating Algebraic Expressions

The video tutorial explains how to evaluate algebraic expressions with one or more variables. It covers the process of substituting given values into expressions and simplifying them. The tutorial includes four examples: adding, multiplying, subtracting, and dividing expressions with variables. The division example involves fractions and demonstrates the 'Keep Change Flip' method for dividing by a fraction.

What are the two main steps in evaluating algebraic expressions with variables?

• Substitute values and multiply

• Factorize and solve

• Rewrite with given values and simplify

• Add constants and divide

What is the first step in evaluating an expression with variables?

• Rewrite the expression with given values

• Add all constants

• Multiply all terms

• Simplify the expression

If k = 25, what is the result of the expression k + 10?

• 40

• 35

• 30

• 15

How do you evaluate the expression 4 * n when n = 12?

• Add 4 to 12

• Divide 12 by 4

• Multiply 4 by 12

• Subtract 4 from 12

When evaluating 4 * n with n = 12, what is the simplified result?

• 44

• 52

• 48

• 36

What is the result of the expression n - m when n = 30 and m = 12?

• 28

• 18

• 42

• 22

What is the result of 30 - 12 in the expression n - m?

• 16

• 18

• 20

• 22

In the expression a / b, if a = 16 and b = 2/3, what is the result?

• 8

• 24

• 32

• 12

What method is used to divide by a fraction in the expression a / b?

• Cross Multiply

• Keep Change Flip

• Add and Subtract

• Multiply and Divide

How do you convert a whole number to a fraction for division?

• Subtract one

• Place it over one

• Add a zero

• Multiply by two