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Lesson 2: Multiplying fractions and whole numbers

# Multiplying fractions by whole numbers on a number line

We can multiply fractions by whole numbers on the number line. We multiply them by adding the fraction multiple times, just like we do with whole numbers.

## Want to join the conversation?

• Why does he make the question 5x1/3 so complex when all you have to do is do 1x5=5 and add the 3?
• "All you have to do" shows that the problem is already intuitive for you to solve. For those where the problem is not yet intuitive to solve, it needs to be explained why the solution works.

Someone is eventually going to ask you "Why do I have to do 1x5 and why is 1x5=5?" and you have to be able to explain that in a clear manner.
• Can I get likes for a badge?
• what if the number is big this is hard! Help Me...
• Is this hard for you guys?
• LOL no
• Why do we have to mutiply fraction?
• because u need it in life even tho u really want need it unless you want to be something
• Yes, I understand this, but why would we want to multiply fractions? We could convert them into decimals and easily solve them. So why multiplying fractions?
• It may not seem useful now, but later on you will have algebraic expressions with uknown numbers (x, y, ...) in fractions and in some cases it will be very difficult to write such numbers as decimal values.
• why do you have to multiply upper one to upper one and the low one to low one
• i dont get eney of it.