Understanding Number Lines and Multiples of 100

What number does the point represent on a number line that starts at 100 and ends at 200, with each tick mark representing 10 numbers?

• 150

• 140

• 130

• 120

On a number line from 600 to 700, where each tick mark represents 20 numbers, what number does the point represent?

• 680

• 620

• 640

• 660

Which number line correctly represents the number 550?

• A number line from 700 to 800

• A number line from 600 to 700

• A number line from 500 to 600

• A number line from 400 to 500