17+24＝      + ＝     ×39＝      ÷ ＝

0.8×2.5＝    4﹣ ＝    4.8÷0.06＝    4×40%＝

4.09×1.2{#blank#}1{#/blank#}4.09          9.84÷2{#blank#}2{#/blank#}9.84

1.6×0.37{#blank#}3{#/blank#}1.6           3.7×100+3.7{#blank#}4{#/blank#}3.7×101

2.4÷0.6{#blank#}5{#/blank#}2.4            4.9÷2.8{#blank#}6{#/blank#}4.9÷0.7

4.5÷0.15={#blank#}1{#/blank#}÷15 0.12÷0.25={#blank#}2{#/blank#}÷2.5

29.4÷{#blank#}3{#/blank#}=2.94÷0.28 1.5÷9.9={#blank#}4{#/blank#}÷{#blank#}5{#/blank#}