{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} {#blank#}5{#/blank#}

31-17{#blank#}1{#/blank#}13             22-19{#blank#}2{#/blank#}4           56-29{#blank#}3{#/blank#}31

24-8{#blank#}4{#/blank#}16             43-28 {#blank#}5{#/blank#}25          65-38{#blank#}6{#/blank#}17

5×8=        18÷2=         4÷4=           12÷3=

49÷7=       10÷5=         54-8=          56÷8=

36÷9=       54÷9=         8×5=          6÷2=

①66-48=

②45+34=

③37+63=

④42-26=

⑤60-19=

⑥76+15=

①33+26=

②77-45=

③68+24=

④98-59=

⑤71-25-45=

⑥80-56+14=

⑦90-（12+36）=