算出下列两图中∠C的度数.
看图列式,算一算.
口算.0.24+6.9= 9.1﹣7.3= 1.2×6= 7.2+2.8=31×3= 24×5= 1000÷8= 0.8×0.6=1.25×4= 300÷50= 480÷0.6= 0.15×9=3.4×0.7= 2.2×3= 0.2×1.1= 2.1÷0.3== = = =
计算下面各题.= = == = == =
计算.===
(1)小熊和小狗一共吃了几分之几?(2)小猪比小狗多吃了几分之几?(3)你还能提出什么数学问题?会解答吗?