Question

Cộng những phân số sau:

5/11 + 4/11 =?

11/10 +  9/10 =?

11/12 + 5/12 =?

7/9 + 5/9 =?

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Answer 1

\(\dfrac{5}{11}+\dfrac{4}{11}=\dfrac{9}{11}\\ \dfrac{11}{10}+\dfrac{9}{10}=\dfrac{20}{10}=2\\ \dfrac{11}{12}+\dfrac{5}{12}=\dfrac{16}{12}=\dfrac{4}{3}\\ \dfrac{7}{9}+\dfrac{5}{9}=\dfrac{12}{9}=\dfrac{4}{3}\)

Answer 2

\(\dfrac{5}{11}+\dfrac{4}{11}=1\)

\(\dfrac{11}{10}+\dfrac{9}{10}=\dfrac{20}{10}=2\)

\(\dfrac{11}{12}+\dfrac{5}{12}=\dfrac{16}{12}=\dfrac{4}{3}\)

\(\dfrac{7}{9}+\dfrac{5}{9}=\dfrac{12}{9}=\dfrac{4}{3}\)

Answer 3

5/11+4/11=9/11

11/10+9/10=20/10=2

11/12+5/12=16/12=4/3

7/9+5/9=12/9=4/3 nhé =)

Answer 4

1. =9/11

2. =20/10=2

3.=16/12=4/3

4.=12/9=4/3

Answer 5

 

5/11 + 4/11=9/11

11/10 +  9/10 =20/10=2

11/12 + 5/12 =16/12

7/9 + 5/9 =12/9

Answer 6

\(\dfrac{9}{11}\)

\(\dfrac{2}{1}\)

\(\dfrac{4}{3}\)

\(\dfrac{12}{9}\)

Answer 7

\(\dfrac{5}{11}+\dfrac{4}{11}=\dfrac{5+4}{11}=\dfrac{9}{11}\)

\(\dfrac{11}{10}+\dfrac{9}{10}=\dfrac{11+9}{10}=\dfrac{20}{10}=2\)

\(\dfrac{11}{12}+\dfrac{5}{12}=\dfrac{11+5}{12}=\dfrac{16}{12}=\dfrac{4}{3}\)

\(\dfrac{7}{9}+\dfrac{5}{9}=\dfrac{7+5}{9}=\dfrac{12}{9}=\dfrac{4}{3}\)

 

Answer 8

1 =9/11  2 =20/10=2  3=16/12=4/3  4=12/9=4/3

Answer 9

5/11+4/11=9/11

11/10+9/10=20/10=2

11/12+5/12=16/12=4/3

7/9+5/9=12/9=4/3