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题型:填空题 题类:常考题 难易度:普通
20以内的进位加法和退位减法569(10题)
16-9=
9+=16
16-9 14-8 12-8 11-9 17-8
{#blank#}1{#/blank#}
10-9={#blank#}1{#/blank#} 13-9={#blank#}2{#/blank#} 11-9={#blank#}3{#/blank#}
9+{#blank#}4{#/blank#}=11 9+{#blank#}5{#/blank#}=11
{#blank#}1{#/blank#} + {#blank#}2{#/blank#} = {#blank#}3{#/blank#}
{#blank#}4{#/blank#} - {#blank#}5{#/blank#} = {#blank#}6{#/blank#}
□+○=16 ○-△=3 △+4=10.
□={#blank#}1{#/blank#} ○={#blank#}2{#/blank#} △={#blank#}3{#/blank#}
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