Substitution Algebraic Expressions

Front

What is substitution in algebra?

Back

Substitution in algebra is the process of replacing a variable with a number or another expression to evaluate an algebraic expression.

Front

Evaluate the expression 3ab when a = 3 and b = 4.

Back

36

Front

What is the value of the expression 3x + 8 when x = 2?

Back

14

Front

Evaluate the expression 2a when a = 3.

Back

6

Front

What is the result of 2a + 4b when a = 10 and b = 6?

Back

44

Front

Calculate the value of a + b when a = 3 and b = 4.

Back

7

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by substituting the variables with their respective numbers.

Front

If a = 5, what is the value of 4a?

Back

20

Front

What is the expression for the perimeter of a rectangle with length l and width w?

Back

P = 2l + 2w.

Front

Evaluate the expression 5c - 2 when c = 5.

Back

23