6th Grade - PEMDAS & Using Substitution Review

Front

What does PEMDAS stand for?

Back

PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, Subtraction. It is the order of operations used to solve mathematical expressions.

Front

What is the first step in the order of operations?

Back

The first step in the order of operations is to solve expressions inside Parentheses.

Front

If y=7, what is the value of 2(y+4)?

Back

22

Front

What is the correct order of operations?

Back

Parentheses, Exponents, Multiplication, Division, Addition, Subtraction.

Front

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

Back

42

Front

If y=4, what is the value of 3y+5?

Back

17

Front

What is the value of 5(6-3)?

Back

15

Front

What is the purpose of using substitution in algebra?

Back

Substitution allows us to replace variables with known values to simplify expressions and solve equations.

Front

What is an expression in mathematics?

Back

An expression is a combination of numbers, variables, and operators (like +, -, *, /) that represents a value.

Front

What is the difference between an expression and an equation?

Back

An expression does not have an equal sign and represents a value, while an equation states that two expressions are equal.