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题型:多选题 题类:常考题 难易度:普通
20以内的进位加法和退位减法545(10题)
{#blank#}1{#/blank#}+{#blank#}2{#/blank#}={#blank#}3{#/blank#}
1+9={#blank#}1{#/blank#}
8+{#blank#}1{#/blank#}=12 9 +{#blank#}2{#/blank#}=16 4 + 7={#blank#}3{#/blank#} 11+{#blank#}4{#/blank#}=14
6+{#blank#}5{#/blank#} =13 {#blank#}6{#/blank#}+ 3 = 11 7 + 8 ={#blank#}7{#/blank#} 6 +{#blank#}8{#/blank#}=12
(棵)
(只)
16-7=
18-9=
15-8=
16-6=
10-3=
11-2=
9+6=
6+8=
5+8=
7+9=
8+8=
7+6=
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