99×0.99{#blank#}1{#/blank#}99；     

1×9.8{#blank#}2{#/blank#}9.8；      

3.6×0.23{#blank#}3{#/blank#}0.23；    

4.9÷1.1{#blank#}4{#/blank#}4.9×1.1．

58.9×3.27＝0.589×{#blank#}1{#/blank#}

0.18×4.16＝18×{#blank#}2{#/blank#}

0.4×0.4={#blank#}1{#/blank#}    7.8×100={#blank#}2{#/blank#}    0.14×0.2={#blank#}3{#/blank#}

0.04×2.1={#blank#}4{#/blank#}    5.3×0.1={#blank#}5{#/blank#}    0.6×0.03={#blank#}6{#/blank#}

0.3×0.8={#blank#}7{#/blank#}    0.42×10={#blank#}8{#/blank#}    0.04×0.6={#blank#}9{#/blank#}