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4th grade (2018 edition)

Course: 4th grade (2018 edition)>Unit 2

Lesson 4: Comparing with multiplication

Comparing with multiplication: age

Sal solves a multiplication comparison word problem.   Created by Sal Khan and Monterey Institute for Technology and Education.

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• so at () twice as much means multiply the age or halve it
• 'Twice as much' basically means 2 times something, which means you multiply the age by 2.
• is comparing age all the time subtractio, divison or multiplacation?
• i'd say "most of the time" not" some of the time." get the facts of it.
• This is so easy... Why is it in 4th grade section for math?
• I don't know. Maybe it's for students who weren't taught it earlier? Sometimes topics and videos on Khan Academy seem to be put in the wrong places.
• does using letters in math really make word problems easier?
• Yes, using variables can make problems more clearer to solve and easier to understand.
• so jared is definitely 8, right?
• Yes, he is! Great job figuring it out :)
• Did that video have to 2 muintes and 38 seconds?
• how did he get black thing