11-9{#blank#}1{#/blank#}3                   13{#blank#}2{#/blank#}12+1             13-4{#blank#}3{#/blank#}16-8

12-3{#blank#}4{#/blank#}4                   17{#blank#}5{#/blank#}9+6              6+2{#blank#}6{#/blank#}13-5

共有14个苹果

{#blank#}1{#/blank#}

14-4=           10+2=         3+7=         2+3+4=

14+4=          15-1=          13-3=         8+2-6=

16-2=           13+2=         6+4=         13-3-5=

2＋3＝       4＋6＝        9－5＝        3＋5＋7＝

10－2＝      7－4＝        4＋8＝        19－3－5＝

7＋8＝       0＋9＝        13－1＝       9－6＋5＝

3＋7＝       5－5＝        10－9＝       18－8－6＝