Fractions adding and subtracting

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  • Oh hey Lola, can I ask you a question? You always ace every test in math. Do you think you could help me with some problems on the bus?
  • Hey Jason! What´s up?
  • So now lets convert 5/6 so that it as the denominator of 24 6 time 4 equals 24 so remember whatever we do to the denominator/ bottom number we do o the numerator/ to number. So 5 times 4 equals 20 and 5/6 is now 20/24. And 20/24+ 12/24=32/24 this number is an improper fraction we have to make it a mixed number. How many times can 24 be in 32? 1 time so 32 - 24=22 the answer to this problem 5/6+ 2/4=1 and 22/24
  • See like this problem: 2/4 + 5/6
  • Hmmmmmm! Well you can't add the denominators because they are not the same so we have to find common denominators by figuring out what factors 4 and 6 have in common!
  • Well one factor both 4 and 6 have in common is 24!
  • So now let's figure out this problem!
  • So 4 times what equals 24? 6! Right So now what we do to the denominator we have to do to the numerator! And since we multipled the denominator by 6 we have to multiply the numerator by 6. So 6 times 2 equals 12 so 2/6 now becomes 12/24!
  • Hey Jason Did that math lesson help yesterday?
  • Yeah thanks I got a awesome A on my worksheet 
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