56－20＝{#blank#}1{#/blank#}

17＋50＝{#blank#}2{#/blank#}

34－4＝{#blank#}3{#/blank#}

27＋70＝{#blank#}4{#/blank#}

41－30＝{#blank#}5{#/blank#}

58－8＝{#blank#}6{#/blank#}

73－13＝{#blank#}7{#/blank#}

46＋40＝{#blank#}8{#/blank#}

32－12＝{#blank#}9{#/blank#}

40+9 =        10 +30 =       59 – 7 =       85 – 80 =

60+40 =       26 +10 =       88 – 8 =       50 +26 =

72 + 27 =      38 – 27 =      54 +25 =       73 – 23 =

100 – 30 =     38 – 35 =      60 + 15 =       16 + 40 =