Substitution 6.EE.2c

Front

What is substitution in algebra?

Back

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

Front

Evaluate the expression 2a + 3 when a = 5.

Back

2(5) + 3 = 10 + 3 = 13.

Front

What does it mean to evaluate an expression?

Back

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

Front

If x = 3, what is the value of 4x - 1?

Back

4(3) - 1 = 12 - 1 = 11.

Front

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

Back

The perimeter P is given by P = 2l + 2w.

Front

Evaluate the expression 5(y + 2) when y = 4.

Back

5(4 + 2) = 5(6) = 30.

Front

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

Back

3(2) + 4(3) = 6 + 12 = 18.

Front

What is the distributive property?

Back

The distributive property states that a(b + c) = ab + ac.

Front

Evaluate the expression 7 - 2x when x = 1.

Back

7 - 2(1) = 7 - 2 = 5.

Front

If m = 5, what is the value of 2m + 3?

Back

2(5) + 3 = 10 + 3 = 13.