3.89/0.25简便计算
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3.89/0.25简便计算
3.89/0.25简便计算
3.89/0.25简便计算
解1:
3.89/0.25
=(3.89×2×2)/(0.25×4)
=(7.78×2)/1
=15.56
解1:
3.89/0.25
=3.89/(1/4)
=3.89×4
=15.56
/0.25就是乘以4, (4-0.11)x4=16-0.44=15.56
3.89÷0.25
=3.89×4÷(0.25×4)
=15.56÷1
=15.56