Using a Number Line to Compare Lengths

This video tutorial teaches how to compare lengths using a number line. It explains the use of rulers and number lines to measure distances, highlights common misunderstandings in counting spaces, and demonstrates how to add and subtract distances. The tutorial includes practical examples, such as calculating total distances run over two days and determining remaining carpet length after cutting. It also covers solving distance problems using both addition and subtraction methods, emphasizing the importance of understanding spaces between marks on a number line.

What is the length of the blue line on the ruler?

• 2 centimeters

• 1 centimeter

• 5 centimeters

• 3 centimeters

How many spaces are there between the numbers 2 and 7 on a number line?

• 4 spaces

• 7 spaces

• 5 spaces

• 6 spaces

If Mary runs 4 miles on the first day and 5 miles on the second day, what is the total distance she ran?

• 8 miles

• 9 miles

• 7 miles

• 10 miles

Samar has a 23-inch piece of carpet and cuts off 6 inches. How much carpet is left?

• 16 inches

• 17 inches

• 19 inches

• 18 inches

If a family has driven 7 miles and the mall is 25 miles away, how much further do they need to drive?

• 15 miles

• 18 miles

• 17 miles

• 20 miles