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题型:单选题 题类:常考题 难易度:普通
20以内的进位加法和退位减法543(10题)
( )- 6 = 3 ( )- 3 = 4 ( )- 1 = 7
( )- ( ) = 3 ( )- ( ) = 6 ( )- ( ) = 4
6{#blank#}1{#/blank#}9 2+3{#blank#}2{#/blank#}8 4-2{#blank#}3{#/blank#}2
2{#blank#}4{#/blank#}0 6+1{#blank#}5{#/blank#}5 9-3{#blank#}6{#/blank#}7
比 少{#blank#}1{#/blank#}。
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