Question

3 phần 10 cộng 1 phần 2

Answer 1

\(\dfrac{3}{10}+\dfrac{1}{2}=\dfrac{3}{10}+\dfrac{1\times5}{2\times5}=\dfrac{3}{10}+\dfrac{5}{10}=\dfrac{3+5}{10}=\dfrac{8}{10}=\dfrac{8:2}{10:2}=\dfrac{4}{5}\)

Answer 2

tính ra bằng bao nhiêu vậy

Answer 3

8 phần 10

Answer 4

4 phần 5

Answer 5

\(\dfrac{3}{10}+\dfrac{1}{2}\)

\(=\dfrac{3}{10}+\dfrac{5}{10}=\dfrac{3+5}{10}=\dfrac{8}{10}=\dfrac{4}{5}\)

Answer 6

\(\dfrac{3}{10}+\dfrac{1}{2}\\ =\dfrac{3}{10}+\dfrac{5}{10}\\ =\dfrac{8}{10}\\ =\dfrac{4}{5}\)

Answer 7

4 phần năm

 

Answer 8

   3/10+1/2

= 3/10 + 5/10

= 8/10 = 4/5