52×2.8={#blank#}1{#/blank#}   5.2×2.8={#blank#}2{#/blank#}   0.52×280={#blank#}3{#/blank#}

520×280={#blank#}4{#/blank#}   0.52×0.28={#blank#}5{#/blank#}   5.2×0.028={#blank#}6{#/blank#}

7.19÷0.98{#blank#}1{#/blank#}7.19      26.7÷1.02{#blank#}2{#/blank#}26.7     1.48×1.2{#blank#}3{#/blank#}1.48 

0.46÷0.46{#blank#}4{#/blank#}0.46     3.2×0.8{#blank#}5{#/blank#}3.2         0.99÷0.9{#blank#}6{#/blank#}1 

0.99×0.99{#blank#}7{#/blank#}0.99÷0.99                 3.56÷1{#blank#}8{#/blank#}3.56×1

 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

{#blank#}1{#/blank#}

{#blank#}2{#/blank#}

{#blank#}3{#/blank#}=1984

{#blank#}4{#/blank#}×16=9920