Unit 1 Test Vocabulary

The distance of a number from zero, which is always positive. |-6| means the ____________ of -6, which is 6. |6| is also 6.

A number without a decimal or a fraction, either positive or negative. -3, -2, -1, 0, 1, 2, 3, etc.

A “-” or a “+” sign which shows if a number is positive or negative. The “+” is usually not written, it is assumed.

Numbers and their _______ always add to 0. For example, -5 and 5 are __________. -12 and 12, etc.

This is something you “do” to a number - like add, subtract, exponents, divide, etc.

This is the order that you do operations on numbers. This has to be the same across the whole world for people to get the same answers on math problems. P, E, M/D, A/S

The answer when you add two numbers (The ____ of 3 and 4 is 7.)

The answer when you subtract two numbers (The ______ of 10 and 4 is 6.)

The answer when you multiply two numbers (The _______ of 5 and 3 is 15.)

The answer when you divide two numbers (The _______ of 20 and 4 is 5.)

Replacing a variable (like x or y) with a number and following the order of operations to simplify.

A way to write a value in “math language” using either numbers, variables, symbols, or all three - but NO EQUALS SIGN, so you cannot “solve” it like an equation.

An unknown amount of something, represented by letters (usually lowercase).

Follow the order of operations to rewrite an expression in the most basic way you can, usually a single number, or a reduced fraction, or using variables.

Shows that the quantity on the left is smaller than the quantity on the right