一个气象小组记录并求得一周的平均温度为15℃．已知前6天的平均温度是14℃，那么第7天的温度是多少摄氏度？
直接写得数．×= ×= ×= ×2= 5﹣=12×= 1÷= +×= （6+）×= ×39×=
口算下面各题．÷8= ×= 5÷= 3+3÷7=×15= 10÷10%= 28×75%= ×8×=
直接写出得数．×16= += 0÷= ÷3=÷= 7﹣= ×= 8÷=
直接写出得数．6÷= ×= 0÷= 4.1﹣÷=﹣= ÷= ×8×= 化简比0.6：=
直接写出得数．×= ×4= ×= ×= 3×=÷2= = ×= 12= ﹣1÷2=
×
= 
×
= 
×
= 
=
= 1÷
= 
+
×
= （6+
）×
×39×
=
÷8= 
×
= 5÷
= 3+3÷7=
×15= 10÷10%= 28×75%= 
×8×
=
×16= 
+
= 0÷
= 
÷3=
÷
= 7﹣
= 
×
= 8÷
=
= 
×
= 0÷
= 4.1﹣
÷
= 
÷
= 
×8×
= 化简比0.6：
=
×
= 
×4= 
×
×
= 3×
=
÷2= 
= 
×
= 12
= 
﹣1÷2=
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