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题型:填空题 题类:常考题 难易度:困难
20以内的进位加法和退位减法466(10题)
一共{#blank#}1{#/blank#}个。 {#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} = {#blank#}5{#/blank#} (个)
一共有{#blank#}1{#/blank#}个苹果.
{#blank#}1{#/blank#}|{#blank#}2{#/blank#}|{#blank#}3{#/blank#}|{#blank#}4{#/blank#}|{#blank#}5{#/blank#}|{#blank#}6{#/blank#}|{#blank#}7{#/blank#}|{#blank#}8{#/blank#}|{#blank#}9{#/blank#}|{#blank#}10{#/blank#}
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