\(a.\)
\(\dfrac{1}{2}giờ=0.5\left(giờ\right)\)
\(\dfrac{3}{4}giờ=0.75\left(giờ\right)\)
\(\dfrac{1}{4}giờ=0.25\left(giờ\right)\)
\(b.\)
\(\dfrac{7}{2}m=3.5m\)
\(\dfrac{3}{10}km=0.3km\)
\(\dfrac{2}{5}kg=0.4kg\)
a) \(\dfrac{1}{2}h=0,5h\)
\(\dfrac{3}{4}h=0,75h\)
\(\dfrac{1}{4}'=0.25'\)
a) 34giờ=0.75(giờ)34giờ=0.75(giờ) 14giờ=0.25(giờ)
310km=0.3km310km=0.3km