①40+30=      ②50+24=      ③98-40=      ④37-5=

⑤23+15=      ⑥66-31=      ⑦83-20=      ⑧55-3=

{#blank#}1{#/blank#}－{#blank#}2{#/blank#}={#blank#}3{#/blank#}

①27＋50=

②39－21=

③79－6=

④36＋50=

⑤32＋27=

⑥69－45=

5×{#blank#}1{#/blank#}=45        35÷{#blank#}2{#/blank#}=7        {#blank#}3{#/blank#}×7=63

42÷{#blank#}4{#/blank#}=6        48－{#blank#}5{#/blank#}=8        6×{#blank#}6{#/blank#}=30

8×{#blank#}7{#/blank#}=56        54÷{#blank#}8{#/blank#}=6        {#blank#}9{#/blank#}＋7=24