Substitution

Front

What is substitution in mathematics?

Back

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

Tags

CCSS.8.EE.C.7B

Front

If p=3 and q=5, what is p + q + 2?

Back

10

Tags

CCSS.6.EE.A.2C

Front

If a = 4 and b = 6, what is 3a + 5b?

Back

42

Tags

CCSS.6.EE.A.2C

Front

If p=3 and q=10, find q^2 - p^2.

Back

91

Tags

CCSS.6.EE.A.2C

Front

If k=5, find \frac{k+3}{4}.

Back

2

Tags

CCSS.6.EE.A.2C

Front

If h=7, find h^2.

Back

49

Tags

CCSS.6.EE.A.2C

Front

What is the formula for the area of a rectangle?

Back

Area = length × width.

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Front

What is the formula for the perimeter of a rectangle?

Back

Perimeter = 2(length + width).

Tags

CCSS.3.MD.D.8

Front

What does it mean to evaluate an expression?

Back

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

Tags

CCSS.6.EE.A.2C

Front

What is the order of operations in mathematics?

Back

The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often abbreviated as PEMDAS.

Tags

CCSS.7.NS.A.3