13－5   12－5   14－5   12－7    11－5

{#blank#}1{#/blank#}＞{#blank#}2{#/blank#}＞{#blank#}3{#/blank#}＞{#blank#}4{#/blank#}＞{#blank#}5{#/blank#}

11－9＝{#blank#}1{#/blank#}15－7＝{#blank#}2{#/blank#}12－8＝{#blank#}3{#/blank#}12－6＝{#blank#}4{#/blank#}

14－7＝{#blank#}5{#/blank#}15－9＝{#blank#}6{#/blank#}16－8＝{#blank#}7{#/blank#}13－6＝{#blank#}8{#/blank#}

12 – 7 =        12 – 4 =        12 – 9 =       12 – 6 =

13 – 5 =        13 – 9 =        13 – 7 =       13 – 4 =

分别代表一个数，算一算，填一填。