同学们去动物园参观，一张门票7元，（1）买4张门票要用多少钱？（2）小兰拿出50元钱，买7张门票够吗？
用小数计算下面各题．5米80厘米+4米15厘米 6吨500千克﹣650千克+= ﹣= +=
心灵脑快．6.3÷0.9= 0.006×100= 2004﹣299= 11﹣= 26×0.25×4=7×÷7×= 5÷7+5= 31×197≈ 0.56×=
直接写得数3.6÷0.6= 0.3×1.5= 7﹣0.35= 3л+7л=62+0.12= ﹣= 14×÷14×= 2.4×5=
口算：0.125×8= 9 ﹣9.875= 3.14×8= ﹣= 1+160%=0.36×1000= 2 ÷= 10﹣9.9= ﹣÷2= 7÷×0=
直接写出得数2.4×5= 250×0.02= 1﹣0.57= 12.5×16=0.24÷1.2= ﹣= ÷= +=÷0.8= = = == 178.5﹣36.5﹣63.5=
+
= 
﹣
= 
=
= 26×0.25×4=
÷7×
= 5÷7+5= 31×197≈ 0.56×
= 
﹣
= 14×
÷14×
﹣9.875= 3.14×8= 
﹣
= 1+160%=
÷
﹣
÷
﹣
= 
÷
= 
+
=
÷0.8= 
= 
= 
=
= 178.5﹣36.5﹣63.5=
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