SF Course 2 Ch 2 Order of Operations

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 order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

Front

What does 'absolute value' mean?

Back

Absolute value is the distance a number is from zero on a number line, regardless of direction. For example, the absolute value of -5 is 5.

Front

Evaluate: 5 - 3 + 2

Back

The correct order is to subtract first: 5 - 3 = 2, then add 2: 2 + 2 = 4.

Front

What is the first operation to perform in the expression (12 + 10) ÷ 10 x 14 - 6?

Back

The first operation is Addition: (12 + 10) = 22.

Front

Evaluate: -2x + -3y if x = 10 and y = -6

Back

Substituting the values: -2(10) + -3(-6) = -20 + 18 = -2.

Front

What is the result of -9 + (-5)?

Back

The result is -14.

Front

What is the difference between addition and subtraction?

Back

Addition combines numbers to get a total, while subtraction takes one number away from another.

Front

What is a negative number?

Back

A negative number is a number less than zero, often used to represent a loss or a decrease.

Front

What is the purpose of parentheses in mathematical expressions?

Back

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

Front

What does it mean to evaluate an expression?

Back

To evaluate an expression means to calculate its value by performing the operations according to the Order of Operations.