Choose the fraction that goes in the blank? 1/2 < _ < 4/5

i don't understand how they got 2/3

Which measure is equivalent to 110 ml? 0.0110 l 0.110 l 1.10 l 11,000 l

What is the missing statement in step 4? ? rts ? ? vtu and ? rtu ? ? vts ? rts ? ? rvs and ? rtu ? ? stv ? vrs ? ? vru and ? usr ? ? usv ? vur ? ? vus and ? uvs ? ? sru

To decrease an amount by 16% what single multiplier would you use