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

               （从上到下依次填写）

43 + 5 =         55 + 4 =         67 + 2 =       3 + 62 =

43 +50 =        55 +40 =         67 +20 =      30 +62 =

87 – 60 =        68 – 30 =        45 – 40 =      56 – 20 =

87 – 6 =         68 – 3 =         45 – 4 =        56 – 2 =

50+2=     56-6=      3+70=       82-80=

17-9=     88-8=      7+60=       95-5=

15-7=     16-8=      12-4=       37-30=