Unit Assessment Practice 2.2

Front

What is the order of operations in mathematics?

Back

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

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by performing the operations indicated in the expression.

Front

What is a variable in mathematics?

Back

A variable is a symbol, often a letter, that represents an unknown value in an equation or expression.

Front

What is a fraction?

Back

A fraction represents a part of a whole and consists of a numerator (top number) and a denominator (bottom number).

Front

How do you convert a mixed number to an improper fraction?

Back

To convert a mixed number to an improper fraction, multiply the whole number by the denominator, add the numerator, and place the result over the original denominator.

Front

What is the formula to find the total cost when buying multiple items?

Back

The total cost can be found using the formula: Total Cost = Price per Item × Number of Items.

Front

What does it mean to solve for n in an equation?

Back

Solving for n means finding the value of n that makes the equation true.

Front

What is the significance of parentheses in mathematical expressions?

Back

Parentheses indicate which operations should be performed first in an expression.

Front

How do you find the remaining amount after a payment?

Back

To find the remaining amount after a payment, subtract the amount paid from the total amount owed.

Front

What is the process of dividing a number by another number?

Back

Dividing a number by another number means determining how many times the second number fits into the first number.