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题型:填空题 题类:常考题 难易度:普通
加、减两步式题549(11题)
+ + =
3+4+1{#blank#}1{#/blank#}7
+ + =6
- - =0
+ ={#blank#}1{#/blank#}
{#blank#}1{#/blank#} + {#blank#}2{#/blank#} + {#blank#}3{#/blank#} = {#blank#}4{#/blank#}
□○□○□=□(支)
(人)
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