Question

六年级数学计算题。。。急急。。请大家帮帮忙。。。（要有过程）

[5又1/6-（1.2+1又7/15）×1.5]÷2又1/3

Answer 1

=[5又1/6-(6/5+22/15)×3/2]÷7/3
=[5又1/6-(18/15+22/15)×3/2]÷7/3
=(5又1/6-40/15×3/2)÷7/3
=(5又1/6-4)÷7/3
=1又1/6÷7/3
=7/6×3/7
=1/2

Answer 2

那是5又6分之一吗？

Answer 3

=[5+1/6-(1+3/15+1+7/15]÷(2+1/3)
=[5+1/6-2-2/3]÷7/3
=[3-1/2]÷7/3
=5/2÷7/3
=15/14
=1+1/14
带分数都用加法表示的,实际写的时候还是要用规范形式~

Answer 4

原式=[31/6-(6/5+22/15)×3/2]×3／7
＝（31／6－9／5－11／5）×3／7
＝（31／6－4）×3/7
=31/14-12/7
=31/14-24/14
=7/14
=1/2

Answer 5

145/42