表中是一个居民楼内家庭人口情况的数据．家庭人口数 2 3 4 5户 数 8 23 6 3算一算这一个楼内平均每户有多少人？
直接写出得数×3=×16=×=（+）×4=×+×=+=÷3= 4÷=
×1= 52﹣42= 0.75﹣0.5=×=÷= 125×0.08= 0.5+0.02=÷=÷= 0.15×6= 12÷0.3= 0÷=
直接写得数．×16= 12÷= 24×=×÷= 1÷=÷15=÷=×÷×=
口算我最棒= 26×======= 6.4÷20%= 125%×8=
直接写得数． 10÷=÷=×= 55×÷=×2= 1÷=÷= 0×+=
×3=
×16=
×
=（
+
）×4=
×
+
×
=
+
=
÷3= 4÷
=
×1= 52﹣42= 0.75﹣0.5=
=
÷
= 125×0.08=
÷
= 0.15×6= 12÷0.3= 0÷
=
×16= 12÷
= 24×
=
×
÷
=
÷15=
÷
=
×
÷
= 26×
=
=
=
=
=
=
= 6.4÷20%= 125%×8=
=
÷
=
= 55×
÷
=
×2= 1÷
=
÷
= 0×
+
=
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