Multiplying three numbers in scientific notation (example) | Pre-Algebra | Khan Academy

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Multiplying really big or really small numbers is much easier when using scientific notation. This video gives an example of multiplying three numbers that are written in scientific notation.

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Pre-Algebra on Khan Academy: No way, this isn't your run of the mill arithmetic. This is Pre-algebra. You're about to play with the professionals. Think of pre-algebra as a runway. You're the airplane and algebra is your sunny vacation destination. Without the runway you're not going anywhere. Seriously, the foundation for all higher mathematics is laid with many of the concepts that we will introduce to you here: negative numbers, absolute value, factors, multiples, decimals, and fractions to name a few. So buckle up and move your seat into the upright position. We're about to take off!

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These videos help so much, thank you.

HyItsAmanda
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Thank you so much thank you this might just be what I need to buss

zionzipod
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The only way I could learn is Sal khan 🎉

karismabartell
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So if there were plus/minus sign inside the parenthesis we would have to do solve it a different way?

pponcho
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So let me see if i understand... Because the values inside the parenthesis are being multiplied you dont have to FOiL it? So if there were plus or minus inside the parenthesis we c

pponcho
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0:20 i'm a little slow but can you please explain how you are allowed to write them all out next to eachother but without the parenthesis? Like why dont you have to do the distributive thingy

jess
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what kind of monster dislikes these videos

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