解:7.4÷0.083约等于两位小数为( 89.16 )
∵已知需求出7.4÷0.083等于多少
X ÷ Y = X / Y = Z
∴7.4 ÷ 0.083
= (7×10+4)/10 ÷ 83/1000
= 74/10 × 1000/83
= 37/5 × 1000/83
= 7400/83
= 89.15662651
≈ 89.16
答:7.4÷0.083约等于两位小数为89.16