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

Evaluate the expression 2a when a = 3.

Back

6

Front

What is the value of 2r + 1 when r = 3?

Back

7

Front

Evaluate the expression 2a + 4b when a = 10 and b = 6.

Back

44

Front

Evaluate the expression 8a - b when a = 10 and b = 6.

Back

74

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 = 2 and b = 5, what is the value of 4a + 3b?

Back

29

Front

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

Back

The first step is to substitute each variable with its corresponding value.

Front

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

Back

23