130×6＝{#blank#}1{#/blank#}

1300×6＝{#blank#}2{#/blank#}

4.5×2.1={#blank#}1{#/blank#}     45×{#blank#}2{#/blank#}=0.945     {#blank#}3{#/blank#}×2.1=0.0945

157×0.9{#blank#}1{#/blank#}157           2.8÷0.6{#blank#}2{#/blank#}2.8

{#blank#}3{#/blank#}         {#blank#}4{#/blank#}

4.09×0.9{#blank#}1{#/blank#}4.09          2÷4.5{#blank#}2{#/blank#}2÷5.4    40.9÷0.25{#blank#}3{#/blank#}40.9×0.25

0.58÷0.99{#blank#}4{#/blank#}0.58     6.3÷0.1{#blank#}5{#/blank#}6.3×10   9.6×0.98{#blank#}6{#/blank#}0.96×98

1.5×68={#blank#}1{#/blank#}      0.15×6.8={#blank#}2{#/blank#}

102÷0.68={#blank#}3{#/blank#}    0.102÷0.15={#blank#}4{#/blank#}