Question

Giúp

Answer 1

=4/10.2

=4/5

Answer 2

4/5

Answer 3

=4/10x2/1=8/10=4/5

Answer 4

\(\dfrac{4}{10}:\dfrac{1}{2}=\dfrac{2}{5}:\dfrac{1}{2}=\dfrac{2}{5}\times2=\dfrac{4}{5}\)

Answer 5

=4/10x2/1=8/10=4/5

Answer 6

=4/10x2/1=8/10=4/5

Answer 7

\(\dfrac{4}{10}:\dfrac{1}{2}=\dfrac{4}{10}\times\dfrac{2}{1}=\dfrac{4\times2}{10\times1}=\dfrac{8}{10}=\dfrac{4}{5}.\)

Answer 8

\(\dfrac{4}{5}\)