This video tutorial teaches how to solve word problems about volume using a number line. It begins with an introduction to volume concepts and a review of measurement units like liters and milliliters. The tutorial highlights common mistakes in solving word problems and emphasizes the importance of understanding the problem before solving it. Two example problems are presented: one involving a goldfish tank and another about filling a truck's gas tank. The video concludes with a summary of the strategies discussed.

What is a common mistake when solving word problems?

• Using the wrong units

• Not reading the problem carefully

• Ignoring the number line

• Not using a calculator

How much water is left in Swimmy's tank after the cat splashes some out?

• 6 liters

• 2 liters

• 8 liters

• 4 liters

What is the initial amount of gas in the uncle's truck?

• 35 liters

• 17 liters

• 10 liters

• 27 liters

How many liters of gas need to be added to fill the uncle's truck completely?

• 20 liters

• 18 liters

• 10 liters

• 8 liters

What method is used to solve the word problems in this lesson?

• Guessing the answer

• Using a number line

• Drawing a diagram

• Using a calculator