计算
$8.6÷2=$
$0.35÷7=$
$6.3÷3=$
$3.6÷4=$
$8.4÷4=$
$0.63÷3=$
$8.8÷8=$
$4.5÷3=$
$3.6÷6=$
$0.84÷2=$
$9.6÷2=$
$0.88÷8=$
$1.5÷5=$
$12÷5=$
$8÷80=$
$4.8÷6=$
$0.56÷8=$
$9÷30=$
$5.4÷3=$
$7.4÷2=$
$7.5÷3=$
$9.6÷4=$

$8.6÷2=4.3$
$0.35÷7=0.05$
$6.3÷3=2.1$
$3.6÷4=0.9$
$8.4÷4=2.1$
$0.63÷3=0.21$
$8.8÷8=1.1$
$4.5÷3=1.5$
$3.6÷6=0.6$
$0.84÷2=0.42$
$9.6÷2=4.8$
$0.88÷8=0.11$
$1.5÷5=0.3$
$12÷5=2.4$
$8÷80=0.1$
$4.8÷6=0.8$
$0.56÷8=0.07$
$9÷30=0.3$
$5.4÷3=1.8$
$7.4÷2=3.7$
$7.5÷3=2.5$
$9.6÷4=2.4$

保留三位小数
5.234234…≈
0.307307…≈
3.8181…≈
1.444…≈
3.0101…≈

5.234234…≈5.234
0.307307…≈0.307
3.8181…≈3.818
1.444…≈1.444
3.0101…≈3.010

用简便形式写出下面的循环小数
0.3636…()
5.255…()
8.0404…()
0.666…()
7.135135…()
9.222…()
0.4545…()
6.018018…()

0.3636…($0.\dot{3}\dot{6}$)
5.255…($5.2\dot{5}$)
8.0404…($8.\dot{0}\dot{4}$)
0.666…($0.\dot{6}$)
7.135135…($7.\dot{1}3\dot{5}$)
9.222…($9.\dot{2}$)
0.4545…($0.\dot{4}\dot{5}$)
6.018018…($6.\dot{0}1\dot{8}$)