Fractions

[Glenedia]

15 2/3 - 6 1/2 - 5/12 In Showing My work 14 8/12- 6 6/12-5/12 Is this right? I don't understand how to borrow to get the answer? Please help! :?

 

[Loren]

Let's do a similar problem.

8 2/5 - 3 5/6 =

7 + 1 2/5 - 3 5/6 =

7 + 7/5 - 3 5/6 =

(7 - 3) + (7/5 - 5/6) =

4 + (42/30 - 25/30) =

4 + 17/30 =

4 17/30.

 

[Glenedia]

Let's do a similar problem.

8 2/5 - 3 5/6 =

7 + 1 2/5 - 3 5/6 =

7 + 7/5 - 3 5/6 =

(7 - 3) + (7/5 - 5/6) =

4 + (42/30 - 25/30) =

4 + 17/30 =

4 17/30.

Don't see how to borrow from a number.

 

[Deleted member 4993]

Let's do a similar problem.

8 2/5 - 3 5/6 =

7 + 1 2/5 - 3 5/6 =

7 + 7/5 - 3 5/6 =

(7 - 3) + (7/5 - 5/6) =

4 + (42/30 - 25/30) =

4 + 17/30 =

4 17/30.

Don't see how to borrow from a number.

In fractions - we don't borrow from a number, as we do in case of "whole numbers".

 

[mmm4444bot]

Click HERE to see lessons on fractions and mixed numbers and doing arithmetic with them.

Personally, I think it's easier to convert all mixed numbers to improper fractions, before doing any arithmetic, because we often need to write equivalent fractions with a common denominator anyway. A final answer can always be reported as a mixed number, at the very end.

47/3 - 13/2 - 5/12

Since 3*4 equals 12, multiply the leftmost fraction by 4/4.

Since 2*6 equals 12, multiply the middle fraction by 6/6.

You'll then have three fractions with a common denominator, so you can do the arithmetic with the numerators.

 

[Loren]

You can borrow in mixed numbers.

7 3/8 - 3 5/8

Borrow 1 from the 7 and give to the 3/8. 3/8 + 1 = 3/8 + 8/8 = 11/8.

6 11/8 - 3 5/8 = (6-3) and (11/8 - 5/8) = 3 6/8 = 3 3/4.
..\(\displaystyle 7\frac{3}{8}=6\frac{11}{8}\)
-\(\displaystyle 3\frac{5}{8}=\)-\(\displaystyle 3\frac{5}{8}\)
_________________
............\(\displaystyle 3\frac{6}{8}= 3\frac{3}{4}\)

 

[Glenedia]

Re:

Click HERE to see lessons on fractions and mixed numbers and doing arithmetic with them.

Personally, I think it's easier to convert all mixed numbers to improper fractions, before doing any arithmetic, because we often need to write equivalent fractions with a common denominator anyway. A final answer can always be reported as a mixed number, at the very end.

47/3 - 13/2 - 5/12

Since 3*4 equals 12, multiply the leftmost fraction by 4/4.

Since 2*6 equals 12, multiply the middle fraction by 6/6.

You'll then have three fractions with a common denominator, so you can do the arithmetic with the numerators.


Thank That is a lot of helper for me and my son.

 

[emily0626]

reduce fractions

i am doing reduce fractions can you help me