{#blank#}1{#/blank#}  {#blank#}2{#/blank#}  {#blank#}3{#/blank#} = {#blank#}4{#/blank#} (条)

75{#blank#}1{#/blank#}37+20     83{#blank#}2{#/blank#}92–8        45+5{#blank#}3{#/blank#}90-40

68–40{#blank#}4{#/blank#}64      5元9角{#blank#}5{#/blank#} 6元     7元–1元5角{#blank#}6{#/blank#} 5元

39分{#blank#}7{#/blank#} 4元     9元{#blank#}8{#/blank#} 8元3角+1元    69角{#blank#}9{#/blank#} 6元9角

65-30=          42+8=          60-9=         27+30=

40+15=         98-80=          36+6=         85-50=

90-60=         27+13=          48-40=        33+44=