substitution

Front

What is substitution in mathematics?

Back

Substitution is the process of replacing a variable with a number or another variable in an expression or equation.

Tags

CCSS.6.EE.A.2C

Front

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

Back

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

Tags

CCSS.6.EE.A.2C

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 values.

Tags

CCSS.6.EE.A.2C

Front

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

Back

4(2) - 3 = 8 - 3 = 5.

Tags

CCSS.6.EE.A.2C

Front

What is the value of 3y + 2 if y = 1?

Back

3(1) + 2 = 3 + 2 = 5.

Tags

CCSS.6.EE.A.2C

Front

If z = 4, what is the value of 5z - 1?

Back

5(4) - 1 = 20 - 1 = 19.

Tags

CCSS.6.EE.A.2C

Front

What is the formula for finding the area of a rectangle?

Back

Area = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

If length = 8 and width = 3, what is the area of the rectangle?

Back

Area = 8 × 3 = 24.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the value of -2x + 4 if x = 3?

Back

-2(3) + 4 = -6 + 4 = -2.

Tags

CCSS.6.EE.A.2C

Front

If a = 5, what is the value of 3a + 7?

Back

3(5) + 7 = 15 + 7 = 22.

Tags

CCSS.6.EE.A.2C