100－{#blank#}1{#/blank#}＝80     30＋{#blank#}2{#/blank#}＝37        40＋{#blank#}3{#/blank#}＝45

46－{#blank#}4{#/blank#}＝6         6＋{#blank#}5{#/blank#}＝36          2＋{#blank#}6{#/blank#}＝27

{#blank#}7{#/blank#}－3＝30         {#blank#}8{#/blank#}＋8＝68          6＋{#blank#}9{#/blank#}＝56

60-40 =        24-14 =       59-30=      46-3+8=

62-8 =         27+9=       17+6=        76+6-8=

20+7 =        30-20 =        90+9=       60-30 =       24+6 =

51+8=         7+83=          85-5 =      90-70=       45+20=

96-7 =        65+20=        39+8=        4+65=

18+50-7=      80-60+35=     90-（60+30）=      63-（76-70）=