①4.35×1.02{#blank#}1{#/blank#}4.35               3.98÷1.2{#blank#}2{#/blank#}3.98           0.98×0.98{#blank#}3{#/blank#}0.98

②40.5÷0.8{#blank#}4{#/blank#}40.5                8.24×1{#blank#}5{#/blank#}8.24             3.9÷0.99{#blank#}6{#/blank#}3.9

54÷0.9{#blank#}1{#/blank#}5.4     6.8×1.1{#blank#}2{#/blank#}6.8     11.1÷1.5{#blank#}3{#/blank#}11.1+1.5

{#blank#}4{#/blank#}        {#blank#}5{#/blank#}        {#blank#}6{#/blank#}      6{#blank#}7{#/blank#}