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Why do you multiply the reciprocalof the divisor when dividing fractions?
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∙ 9y ago
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∙ 9y ago
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To divide real numbers as fractions multiply by the of the divisor?
" ... multiply by the RECIPROCAL of the divisor.
Do you need a common denominator to divide fractions?
No. Dividing fractions is achieved by inverting the divisor and multiplying the resulting fractions. To multiply fractions the numerators are multiplied together to form the new numerator and the denominators are multiplied together to form the new denominator.
When doing fractions why is it easier to multiply and divide fractions than add and substract fractions?
It is easier to multiply or divide fractions than to add or subtract fractions because in multiplication, you just have to multiply the numerator by the numerator and the denominator by the denominator. Same applies with division of fractions, except that you have to reciprocate the fraction you're dividing with (divisor) then proceed to multiplication. Whereas, in addition and subtraction of fractions, you still have to get their Least Common Denominator (LCD).
What is the difference between multiplying and dividing equations containing fractions?
To divide fractions, you multiply the dividend by the reciprocal of the divisor. Example: 1/5 ÷ 2/3 = 1/5 x 3/2 = 3/10
What is the difference between multiplying and dividing two rational expressions?
multiplying rational expressions means multiplying two alg. rxpressions that look like fractions, Just like normal, multiply numerators and multiply denominators then reduce. Division, just like regular fractions means to invert the divisor and the multiply (as above)
When you divide a decimal by decimal why do you multiply the dividend and the divisor by the power of 10?
Some people do that so that the divisor becomes an integer under the impression that dividing by a whole number is, in some way, easier than dividing by a decimal.
Witch is the divisor?
the divisor is the number your dividing into.
How is multiplying of fractions simialar to dividing of fractions?
In multiplication and division of fractions, both involve multiplication. This is their similarity. In multiplication of fractions, multiply the numerator by the numerator of the other fraction and the denominator by the denominator of the other fraction. Example: 1/2 * 2/3 = 2/6 In division of fractions, reciprocate the divisor then follow the step in multiplying fractions. Example: 1/2 ÷ 2/3 = 1/2 * 3/2 = 3/4
When dividing the number you are dividing by is called the?
Divisor
Why do you need to find the reciprocal of the divisor when dividing a fraction?
It is not just in fractions. In general, division can be defined as multiplication by the reciprocal. For example, dividing by 5 is the same as multiplying by 0.2. However, it is mainly in calculations with fractions that this is normally used as a practical way of doing the calculations.
Why should you multiply the divisor and the dividend by the same power of 10?
If you are a beginner and not comfortable doing divisions when either the numerator or particularly the denominator are decimal fractions, then it is useful to multiply them both by the same power of 10 to get rid of the decimal fractions.
When dividing mass and volume which is the divisor?
The divisor is the number doing the dividing, rather than the number being divided. For example, in the problem 144/12, 12 is dividing into 144, so 12 is the divisor. If you are dividing mass by volume to attempt to find density, the volume measurement will be the divisor.
