停车场每小时收费3.2元，5.5小时收费（{#blank#}1{#/blank#}   ）元。

0.5×3{#blank#}1{#/blank#}0.9   0.5×0.1{#blank#}2{#/blank#}0.5

154×78{#blank#}1{#/blank#}154             18.7×3.1{#blank#}2{#/blank#}18.7 

1.14×0.86{#blank#}3{#/blank#}0.86          4.69×0.99{#blank#}4{#/blank#}4.69×1.2 

0.49×9.4{#blank#}5{#/blank#}49×0.094      9.6×0.98{#blank#}6{#/blank#}0.96×98

0.4×0.6＝        1.2×0.4＝           2.3×0.5＝

3.1×0.02＝     0.32×0.8＝         3.7×0.6＝

5.7×0.9＝        8.5×0.7＝         1.8×0.3＝