一个因数扩大10倍，另一个因数不变，积扩大了{#blank#}2{#/blank#}倍．

1.03×5.7{#blank#}1{#/blank#}5.7   4.8÷1.1{#blank#}2{#/blank#}4.8     21.6×0.3{#blank#}3{#/blank#}21.6÷0.3

3.14×0.14{#blank#}1{#/blank#}3.14              3.14÷0.41{#blank#}2{#/blank#}3.14

7.8×1.14{#blank#}3{#/blank#}7.8-1.14           7.8÷4.11{#blank#}4{#/blank#}7.8÷1.14

0.18÷0.09{#blank#}1{#/blank#}0.18×0.09         0.7×0.7{#blank#}2{#/blank#}0.7+0.7

3.07×0.65{#blank#}3{#/blank#}0.307×6.5         4.35×10{#blank#}4{#/blank#}0.8×43.5