4.6×6={#blank#}1{#/blank#}   8.9×7={#blank#}2{#/blank#}   15.6×13={#blank#}3{#/blank#}

0.18×15={#blank#}4{#/blank#}   0.025×14= {#blank#}5{#/blank#}  3.06×36={#blank#}6{#/blank#}

12.23的3倍{#blank#}1{#/blank#}

25的1.8倍{#blank#}2{#/blank#}

1.3÷0.9{#blank#}1{#/blank#}1.3        3.45×1.2{#blank#}2{#/blank#}1.2×3.45       2.6÷1.2{#blank#}3{#/blank#}2.6

260×0.6{#blank#}4{#/blank#}260      2.38×1.1{#blank#}5{#/blank#}2.38              0.9×3.7{#blank#}6{#/blank#}3.7

2.8÷0.7=         1.5+4.2=          0.28×10=         6.87-0.87=

9.82×0=          1.01-1=           21.8÷2=            2.5×3.4×40=

2.45+0.5=         0.1²=             0.56÷0.8=        0.2×0.2×0.2=