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题型:填空题 题类:常考题 难易度:困难
一年级 20以内的退位
7+<19
7+>19
18-9=( )
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#} = {#blank#}4{#/blank#}
15-6= 7+6= 14-8= 13-9=
12-3= 18-9= 11-7= 8+4=
20,3,15,9,12,18,13,8
{#blank#}1{#/blank#}<{#blank#}2{#/blank#}<{#blank#}3{#/blank#}<{#blank#}4{#/blank#}<{#blank#}5{#/blank#}<{#blank#}6{#/blank#}<{#blank#}7{#/blank#}<{#blank#}8{#/blank#}
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