Today in class we had a test on fractions.
It was a mixed test with adding, subtracting,
and multiplying. There was 4 questions and
in this scribe 2 of them our solved.
Now we are going to solve one of the answers together step by step.
7 / 8 x 4 / 5 =
When we multiply fractions we don't have to find a common denominator, all we have to do is multiply the denominators and the numerators.
8 x 5 = 40 ( denominator 40 )
7 x 4 = 28 ( numerator 28 )
Now our fraction is....
28 / 40 , But can we reduce that?
40 and 28 are both divisible by 4.
28 divided by 4 is 7
40 divided by 4 is 10.
OUR FINAL ANSWER IS........
7 / 10
------------------------------------------------------------------Our next question is.....
2 2 / 3 x 4 1 / 2 =
Since we have a mixed fractions we have to
convert the fraction in to an improper fraction.
2 2 / 3 = 8 / 3
3 x 2 + 2 = 8
Now our new fractions are 8 / 3 x 9 / 2 =
4 1 / 2 = 9 / 2
2 x 4 = 1 = 9
The next step is multiply the numerators and the denominators.
8 x 9 = 72 3 x 2 = 6 72 / 6
The next part is to convert the
improper fraction into a mixed
fraction.
Since our denominator goes into the numerator evenly we are left with a whole number, witch is our answer.
OUR FINAL ANSWER IS.......
12
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