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12÷2＝{#blank#}2{#/blank#}

12÷6＝{#blank#}3{#/blank#}

4÷{#blank#}1{#/blank#}=4     8×{#blank#}2{#/blank#}=32    {#blank#}3{#/blank#} ÷5=8

9×{#blank#}4{#/blank#}=36    72÷{#blank#}5{#/blank#}=8    42÷{#blank#}6{#/blank#}=7

80-60=         50 +20=        85-80=      73 +20=

83-9=            47+8=          56-34 =       23+55=

3×7=             49÷7=        4×8=         32÷4=

5×9=              18÷9=         6×4 =        12÷2=

8×7+8=            3×7+26=       6×7-25 =     48÷8+45=