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 A ÷ B = A / B = C ∴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