Lesson 1 Number Lines and Integers

All positive and negative numbers that are not fractions or decimals

• fractions

• whole numbers

• integers

a number that is neither positive or negative; zero is an example

• integer

• whole number

• neutral number

A diagram that represents numbers as points on a line. They can be either horizontal or vertical. The arrows mean that the line goes on forever in both directions

• number line

• horizontal

• plot

Two numbers that have the same absolute value but have opposite signs. When you add them together the answer is 0

• negative integers

• zero

• opposite numbers

All whole numbers, positive and negative, and zero

• integers

• absolute value

• zero

The distance a number is from zero on a number line. Since absolute value is a distance, its value will always be positive. Absolute value is shown by two vertical bars around the number

• opposite numbers

• zero

• absolute value

Symbols used to compare two numbers

• equal sign

• inequality symbols

• decimal point

What means going straight across from side to side?

• vertical

• number line

• horizontal

What means going straight up and down?

• vertical

• number line

• horizontal