①1.25×3.69×2.5  

②32.4÷2.5÷0.4 

③21.3×5.34﹣1.3×5.34．

1.4÷0.7={#blank#}1{#/blank#}

8.5÷4={#blank#}2{#/blank#}

21÷100={#blank#}3{#/blank#}

3.6÷0.4={#blank#}4{#/blank#}

                  ÷6=         5.2÷13=  

7.1÷0.71=       5.6÷0.08=         6÷1.5=         0.36÷3=

57×0.9{#blank#}1{#/blank#}57÷0.9       0.83×10{#blank#}2{#/blank#}8.3      0.345×100{#blank#}3{#/blank#}3.45÷100

4.2×7.8+2.2×4.2                7.12×101-7.12

9.52×3.68÷0.952               62.7÷8÷1.25

20.9+10.5÷(5.2-3.1)