Substitution/Order of Operations/Equivalent Expressions

Front

What is the Order of Operations?

Back

The Order of Operations is a set of rules that determines the sequence in which calculations are performed in a mathematical expression. The acronym PEMDAS helps remember the order: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Tags

CCSS.7.NS.A.3

Front

What does it mean to substitute a variable in an expression?

Back

Substituting a variable means replacing the variable with a specific value to evaluate the expression. For example, in the expression 3(x + 2), if x = 4, then it becomes 3(4 + 2) = 18.

Tags

CCSS.6.EE.A.2C

Front

What is an equivalent expression?

Back

An equivalent expression is an expression that has the same value as another expression for all values of the variable(s). For example, 2(x + 3) and 2x + 6 are equivalent expressions.

Tags

CCSS.6.EE.A.4

Front

Calculate: 4(8 - 4)

Back

16

Tags

CCSS.5.OA.A.1

CCSS.5.OA.A.2

Front

Evaluate: 3(6 + x) when x = 5

Back

33

Tags

CCSS.6.EE.A.2C

Front

Solve: 92 - (80 - 2) when x = 2

Back

14

Tags

CCSS.6.EE.A.2C

Front

Calculate: 5(10 - 4)

Back

30

Tags

CCSS.6.EE.A.2C

Front

Evaluate: 6x when x = 11

Back

66

Tags

CCSS.6.EE.A.2C

Front

What is the value of x in the equation 2x + 3 = 11?

Back

x = 4.

Tags

CCSS.7.EE.B.4A

Front

What is the first step in solving the expression 7 + 2(3 + 4)?

Back

First, solve the expression inside the parentheses: 3 + 4 = 7.

Tags

CCSS.6.EE.A.2C