what is the sum of 2/5 and 2/4?
回答 (25)
2008-02-13 5:15 am
✔ 最佳答案
2/5+2/42/5+1/2
4/10+5/10
9/10 or .9
2008-02-13 5:15 am
2/5 = 8/20
2/4 = 10/20=
18/20 or 9/10
2/4 = 10/20=
18/20 or 9/10
2008-02-13 5:19 am
2/5 + 2/4
(get the least common denominator=20)
= 8/20 + 10/20
(divide 20 by the denominators and then multiply the quotient to the numerator)
=18/20 = 9/10
=.9
(get the least common denominator=20)
= 8/20 + 10/20
(divide 20 by the denominators and then multiply the quotient to the numerator)
=18/20 = 9/10
=.9
2008-02-13 6:45 am
2/5 + 2/4
= 2x4 / 5x4 + 2x5 /4x5
= 8/20 + 10/20
= 18/20
= 18÷2 / 20÷2
= 9/10
= 2x4 / 5x4 + 2x5 /4x5
= 8/20 + 10/20
= 18/20
= 18÷2 / 20÷2
= 9/10
2008-02-13 5:56 am
2(4)/5(4) = 8/20
2(5)/4(5) = 10/20=
10/20+8/20 =18/20 or 9/10 = .9
2(5)/4(5) = 10/20=
10/20+8/20 =18/20 or 9/10 = .9
2008-02-13 5:16 am
find the Lowest Common Denominator and proceed as follows:
(2/5) + (2/4) = (8/20) + (10/20) = 18/20
Simplify: 9/10
(2/5) + (2/4) = (8/20) + (10/20) = 18/20
Simplify: 9/10
2008-02-13 5:18 am
You have to convert the denominators to the lowest common number before you can add fractions. In this case, it's 10, since 2/4 is 1/2 and the lowest common denominator of 2 and 5 is 10. The answer is 4/10 + 5/10 = 9/10.
2008-02-13 5:17 am
find a common denominator
5x4 = 20 so this could work as a common denominator
write 2/5 in terms of something/20 and write 2/4 as something/20
2/5 = x/20 x= 8
2/4 = x/20 x= 10
now we have,
8/20 plus 10/20 which would be 8+10/20, which is 18/20. In reduced form, it is 9/10.
5x4 = 20 so this could work as a common denominator
write 2/5 in terms of something/20 and write 2/4 as something/20
2/5 = x/20 x= 8
2/4 = x/20 x= 10
now we have,
8/20 plus 10/20 which would be 8+10/20, which is 18/20. In reduced form, it is 9/10.
2008-02-13 5:16 am
LCM of 5 and 4 = 20
4x2 = 8
5x2 = 10
8+10 = 18
Answer = 18/20 = 0.9 or 9/10
4x2 = 8
5x2 = 10
8+10 = 18
Answer = 18/20 = 0.9 or 9/10
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