86.4÷36=
1.57÷3.9≈保留两位小数)
☆7.59÷0.23=
3.6÷0.4-1.2×5
19.2÷(2.3-0.7)
0.175÷0.25×4
0.9×0.3= 1.2×0.5= 2.7×0.5= 3.2×0.9=
0.3÷6= 2÷0.04= 0.63÷9= 0.36÷100=
①26.3+9.1÷(5.4-4.7)
②47.6-22.5÷2.5×1.3
③4.8÷[(46-16)÷7.5]
④0.85×0.25+0.85×0.75
⑤6.81-(6.82×0.5-0.5)
⑥34×[1.5÷(1.2+4.8)]
①18.2+10×(0.96+1.04)
②6.21÷1.25÷0.8
③4.86×9.6+0.486×4
④1.3+2.9+8.7+13.31
⑤25×1.02
⑥21÷3.5+21÷1.5
买进价格
37.8元/股
卖出价格
46.2元/股