Question

19,5:(3,5-1,55)
(2,5-1,805):1,39
91×0,4:5,6
3,48:0,24×1,8

Answer 1

19.5:(3.5-1.55)=19.5:1.95=10
(2.5-1.805):1.39=0.695:1.39=0.5
91*0.4:5.6=6.5
3.48:0.24*1.8=26.1