Number Lines

Question 1

What is a number line?

Answer 1

A straight line with numbers placed at evenly spaced points, centered on zero, extending infinitely in both directions

Question 2

What does the origin represent?

Answer 2

The point labeled “0”, which divides positive from negative numbers

Question 3

How can you tell which of the two numbers is larger on the number line?

Answer 3

The number farther to the right is greater; the one on the left is smaller

Question 4

Where are negative numbers located on the number line

Answer 4

To the left of the zero, getting smaller as you go further left

Question 5

How do you add positive numbers on a number line?

Answer 5

Start at the first numbers point, then move right by the second numbers value

Question 6

How do you subtract using a number line?

Answer 6

Start at the bigger numbers point, then move left by the number you are subtracting

Question 7

How do you plot a fraction on a number line?

Answer 7

Divide the segment between 0 and 1 into four equal parts, then count three parts to the right

Question 8

What is an interval on the number line

Answer 8

A continuous segment between two points; closed intervals include endpoints, open intervals exclude them