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Sal uses visual models to add 7/10 and 13/100.

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• Why when we are doing the fraction like 80/100 or 50/100 why do have to multiply why can't we divide, add or subtract.
• how do you know which one to do first?
• I couldn't figure it out when I stopped the vidio.Could you
(1 vote)
• it is like this, first turn the 10's into 100' by multiplying by ten then add normally like 8/10 + 14/100 so 8x 10 = 80 and 80+14=94 so 94 is the answer
• If someone posts a question how will they know if someone answered it? Some people post questions like 9 years ago and I answer them!
(1 vote)
• Hehe just like this I will probably forget about it forever!
(1 vote)
• How do you multiply 7/10 by 10/10?
• By the conventional methods, the numerators , 7 and 10, multiplied together will give 70, and the denominators, both 10, multiplied together will give 100. But if you reduce the 10/10 to the simplest form, you won't really be needing to do any multiplying at all.
• these r so easy