解:3分之4+1.6-5分之3+0.25等于( 31/12 )
∵已知需求出3分之4+1.6-5分之3+0.25等于多少
∴3分之4 + 1.6 - 5分之3 + 0.25
= 4/3 + (1×10+6)/10 - 3/5 + 25/100
= 4/3 + 16/10 - 3/5 + 1/4
= 4/3 + 8/5 - 3/5 + 1/4
= 4/3 + 1/4 + 8/5 - 3/5
= (4/3 + 1/4)+(8/5 - 3/5)
= (16/12 + 3/12) + 5/5
= 19/12 + 1
= 19/12 + 12/12
= 31/12
答:3分之4+1.6-5分之3+0.25等于31/12