解:6.4÷0.6+6.4÷0.4等於( 80/3 ),【即約等於26.67】
∵已知需求出6.4÷0.6+6.4÷0.4等於多少
∴6.4 ÷ 0.6 + 6.4 ÷ 0.4
= (6×10+4)/10 ÷ 6/10 + (6×10+4)/10 ÷ 4/10
= 64/10 ÷ 3/5 + 64/10 ÷ 2/5
= 32/5 × 5/3 + 32/5 × 5/2
= 32/5 × (5/3 + 5/2)
= 32/5 × (10/6 + 15/6)
= 32/5 × 25/6
= 80/3
= 26.66666667
≈ 26.67
答:6.4÷0.6+6.4÷0.4等於80/3,【即約等於26.67】
解:6.4÷0.6+6.4÷0.4等於( 80/3 ),【即約等於26.67】
∵已知需求出6.4÷0.6+6.4÷0.4等於多少
∴6.4 ÷ 0.6 + 6.4 ÷ 0.4
= (6×10+4)/10 ÷ 6/10 + (6×10+4)/10 ÷ 4/10
= 64/10 ÷ 3/5 + 64/10 ÷ 2/5
= 32/5 × 5/3 + 32/5 × 5/2
= 32/5 × (5/3 + 5/2)
= 32/5 × (10/6 + 15/6)
= 32/5 × 25/6
= 80/3
= 26.66666667
≈ 26.67
答:6.4÷0.6+6.4÷0.4等於80/3,【即約等於26.67】