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Why do you multiply by the secound number when dividing fractions?
Wiki User
∙ 13y ago
You don't multiply by the second number, you multiply by the recipricol. For example, 5/8 divided by 3/5... you multiply 5/8 by 5/3. Which would give you 25/24ths, or 1 and 1/24.
Wiki User
∙ 13y ago
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What is the formula in dividing fractions?
There is no formula for dividing fractions, but there is a way of doing it. When you a fraction divided by another fraction like below... 1/2 divided by 4/7.... Swap the second fraction around and then multiply like this... 1/2 multiplied by 7/4.... And when multiplying fractions, multiply the numerators (top number) together, and the denominators (bottom number) together (1x7)/(2x4) = 7/8 Simple
How do you convert fractions with percent signs into normal fractions?
by dividing the number by 100.
Why does the method of dividing fractions work?
This is related to the fact that dividing by a number is the same as multiplying with the number's reciprocal.
When you are dividing two fractions how come your answer is bigger than 1?
The answer is always bigger than one only if the fraction you are dividing by is smaller than the fraction you are dividing into. Any number divided by a smaller number is bigger than 1. To divide fractions you invert he demominator and multiply: 1/2 divided by 1/4 = 1/2 times 4 = 2
What is 8 over 7 divided by 6 over 5?
Remember that to divide fractions you FLIP and MULTIPLY. So we FLIP the second number 6/5 becomes 5/6 and then MULTIPLY the two fractions. 8/7 x 5/6 = (8x5)/(7x6) = 40/42 = 20/21 (reduced) Further instruction for dividing fractions can be found at the website listed in Related Links, below. Also if you want to know why we're allowed to flip and multiply look up the Chinese Method for Dividing Fractions.
How dividing by decimal is different from dividing by whole number and how it is similar?
Dividing by decimal is different from dividing by whole number as you have to multiply by a number to remove the decimal.
Why does dividing fractions involve multiplication?
Dividing fractions invole multiplacation because you can use it too see how many time's a number goes into another answer. And that is why dividing involves multiplacation.
Why do you have to switch the numerator and denominator when dividing fractions?
This is because dividing by a number is the same as multiplying by its reciprocal.
How is dividing mixed numbers the same as dividing fractions?
A mixed number can be converted into an improper fraction. Mixed numbers as improper fractions can be divided just like any other fraction. To convert a mixed number to an improper fraction multiply the whole number by the denominator and add the original numerator to give the new numerator and put this over the original denominator.
When do you add fractions when baking?
In order to add fractions, they must have the same denominators. If the fractions you wish to add do not already have the same denominators, they can be made to do so by finding the right number by which to multiply both the numerator and the denominator of each fraction. To find this number, multiply all the distinct denominators together, then multiply both the numerator and denominator of each fraction by a number found by the dividing the product of the distinct denominators by the denominator of the particular fraction concerned. All the fractions will then have the same denominator. Add the numerators of such fractions together to find the numerator of the sum; its denominator will be the one common to all the fractions.
How can you use the reciprocal of a number when dividing a mixed number by a mixed number?
Convert them to improper fractions.
How do you check a division problem?
Multiply the answer to the problem by the number that you are dividing by. (e.g. 18/2=9 Check it with 9*2=18)
