①1.28+2.72=       1-0.9=           0.32÷0.8=       0.8×5=

②0.9×0.1=         3.11＋2.22=      10+0.37=       12.5＋12.5×7=

③0.25×4=          0.16×4=

9.81÷4.2={#blank#}1{#/blank#}

4.5÷1.01{#blank#}1{#/blank#}4.5           270×0.999{#blank#}2{#/blank#}270×1.002

1.25÷0.08{#blank#}3{#/blank#}125÷8      {#blank#}4{#/blank#}

 0.16÷0.08{#blank#}1{#/blank#}0.16×0.08      0.6×0.6{#blank#}2{#/blank#}0.6+0.6

 20.4×0.5 {#blank#}3{#/blank#} 2.04×5           70{#blank#}4{#/blank#}6.9×9.9