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## Arithmetic

### Course: Arithmetic>Unit 2

Lesson 9: Comparing with multiplication

# Comparing with multiplication and addition: giraffe

Sal solves 2 multiplication comparison word problems.   Created by Sal Khan.

## Want to join the conversation?

• SO, according to the video the giraffe is just 2 times taller than shanntanu!
Look: G = 3xS = 18ft tall
G= 18ft tall; S = 6ft tall => G = 2xS taller than S
If the G = 3xS taller than S, the answer would be = 24ft tall!
I think the wording of the question should be like :" The giraffe has 3 times the height..."
• what the heck does that mean
• and what is the point of this agian?
• the point is to use times? I think
• why are the equations so hard?
• They are not hard, you just dont understand them so you need to get more practice on this.
• but how do i do it?
• so if your multiplying like 1x1=1 because there is only one of it and if its like 2x0=0 because there is none of it
• its so ezz its 18 hight
• it is
• what in the world
• why is math important
• I think of math as a language that can describes certain concepts of the world in finite ways

Like for example if I wanted to figure out how much time will it take to fill up a tub of water at a rate of 5 ml/second then instead of literally timing myself adding 5 ml of water every second I use a form of math(in this case the problem I'm doing can be answer using volume and ratios)

Math can help people figure out the answer to a problem EXTREMELY fast and accurate without wasting time(the most important thing in life in my opinion)