Substitution Practice

Front

What do you do second in the expression 18 - 20/2 x 2 + 9 - 7?

Back

Multiply.

Front

Evaluate 15 - m for m = 7.

Back

8.

Front

Solve the expression r/7(a - b^2) where r=49, a=15, b=3.

Back

42.

Front

What are add, subtract, multiply, and divide called in math?

Back

Operations.

Front

What is a language of symbols including variables?

Back

Algebra.

Front

What is the order of operations in math?

Back

PEMDAS (Parentheses, Exponents, Multiplication and Division, Addition and Subtraction).

Front

What does the 'P' in PEMDAS stand for?

Back

Parentheses.

Front

What does the 'E' in PEMDAS stand for?

Back

Exponents.

Front

What is a variable in algebra?

Back

A symbol that represents an unknown value.

Front

What is an expression in math?

Back

A combination of numbers, variables, and operations without an equality sign.