Linear Algebra Unit 1 Review

Front

What is the absolute value of a number?

Back

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

Front

Back

6

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 order is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right). This is often remembered by the acronym PEMDAS.

Front

Simplify the expression: 2 ⋅ 3 + 8 ÷ 4.

Back

8

Front

What does it mean to simplify an expression?

Back

To simplify an expression means to reduce it to its simplest form by performing operations and combining like terms.

Front

Back

-4

Front

What is a negative number?

Back

A negative number is a number that is less than zero, represented with a minus sign (-). For example, -1, -2, and -3 are negative numbers.

Front

Back

-6

Front

What is the product of a negative number and a positive number?

Back

The product of a negative number and a positive number is always negative. For example, 3 * -2 = -6.

Front

Back

-18