13.6+0.9{#blank#}1{#/blank#}14.6                3.53{#blank#}2{#/blank#}3.50    

8.5-1.3 {#blank#}3{#/blank#}7.5                  28.8{#blank#}4{#/blank#} 28.800 

9-0.5{#blank#}5{#/blank#}0.9-0.5                 9.8-6.8{#blank#}6{#/blank#}6.8-4.8

3.5×0.9{#blank#}1{#/blank#}3.5           0.46×1{#blank#}2{#/blank#}0.46          5.83{#blank#}3{#/blank#}1.01×5.83

2.7×0.9{#blank#}4{#/blank#}2.7×1.01     5.2×10{#blank#}5{#/blank#}5.2÷10        0.99{#blank#}6{#/blank#}0.99×0.99

27％＝0.27