7²={#blank#}1{#/blank#}      5²={#blank#}2{#/blank#}         10²={#blank#}3{#/blank#}      4²={#blank#}4{#/blank#}

3π={#blank#}5{#/blank#}      9π={#blank#}6{#/blank#}        6π={#blank#}7{#/blank#}      8π={#blank#}8{#/blank#}

①4.3×2{#blank#}1{#/blank#}4.3+4.3        0.6×3{#blank#}2{#/blank#}0.6×2          0.4+3{#blank#}3{#/blank#}0.4×3

②1.2+1.2{#blank#}4{#/blank#}1.2×3        6×0.1{#blank#}5{#/blank#}0.1×6          7.5+15{#blank#}6{#/blank#}7.5×4

0.6×2=       0.04×10=      0.6×100=        0.5×0.2=

0.3×0.3=     0.6×0.5=       0.4×0.07=        0.01×0.1=