Question

\(\dfrac{4}{5}+\dfrac{1}{10}\)

 

\(\dfrac{7}{12}\) \(-\) \(\dfrac{1}{4}\)

 

5 x \(\dfrac{4}{15}\)

 

\(\dfrac{2}{5}:\dfrac{6}{5}\)

Answer 1

a: 4/5+1/10=8/10+1/10=9/10

b: 7/12-1/4=7/12-3/12=4/12=1/4

c: 5x4/15=20/15=4/3

Answer 2

`4/5+1/10=8/10+1/10=9/10`

`7/12-1/4=7/12-3/12=4/12=1/3`

`5xx4/15=[5xx4]/[3xx5]=4/3`

`2/5:6/5=2/5xx5/6=[2xx5]/[5xx2xx3]=1/3`

Answer 3

\(\dfrac{4}{5}+\dfrac{1}{10}=\dfrac{8}{10}+\dfrac{1}{10}=\dfrac{9}{10}\)

 

\(\dfrac{7}{12}-\dfrac{1}{4}=\dfrac{7}{12}-\dfrac{3}{12}=\dfrac{4}{12}=\dfrac{1}{3}\)

 

\(5\times\dfrac{4}{15}=\dfrac{5\times4}{15}=\dfrac{20}{15}=\dfrac{4}{3}\)

 

\(\dfrac{2}{5}:\dfrac{6}{5}=\dfrac{2}{5}\times\dfrac{5}{6}=\dfrac{10}{30}=\dfrac{1}{3}\)

Answer 4

\(\dfrac{4}{5}+\dfrac{1}{10}=\dfrac{9}{10}\)

\(\dfrac{7}{12}-\dfrac{1}{4}=\dfrac{1}{3}\)

\(5x\dfrac{4}{15}=\dfrac{4}{3}\)

\(\dfrac{2}{5}:\dfrac{6}{5}=\dfrac{1}{3}\)

Answer 5

\(\dfrac{4}{5}+\dfrac{1}{10}=\dfrac{8}{10}+\dfrac{1}{10}=\dfrac{8+1}{10}=\dfrac{9}{10}\)

\(\dfrac{7}{12}-\dfrac{1}{4}=\dfrac{7}{12}-\dfrac{3}{12}=\dfrac{7-3}{12}=\dfrac{4}{12}=\dfrac{1}{3}\)

\(5\) x \(\dfrac{4}{15}=\)\(\dfrac{20}{15}=\dfrac{4}{3}\)

\(\dfrac{2}{5}:\dfrac{6}{5}=\dfrac{2}{5}\) x \(\dfrac{5}{6}=\dfrac{10}{30}=\dfrac{1}{3}\)

Answer 6

a) 4/5 + 1/10 = 8/10 + 1/10 = 9/10

b) 7/12 - 1/4 = 7/12 - 3/12 = 4/12 = 1/3

c) 5 x 4/15 = 5 x 4/15 = 20/15 = 4/3

d) 2/5 : 6/5 = 2/5 x 5/6 = 10/30 = 1/3