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

9.60{#blank#}1{#/blank#}8.91      8.5+4.25{#blank#}2{#/blank#}12.75     86+47{#blank#}3{#/blank#}47+86

11.4{#blank#}4{#/blank#}15.11     10-4.3{#blank#}5{#/blank#}6.7        102×66{#blank#}6{#/blank#}100×66+2