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题型:单选题 题类:常考题 难易度:普通
北师大数学习题①一下六单元三小节 阅览室【xj】
16{#blank#}1{#/blank#}7 9+3 {#blank#}2{#/blank#} 3+9 20 {#blank#}3{#/blank#} 19 12+7 {#blank#}4{#/blank#} 17
17 {#blank#}5{#/blank#} 11 7-4 {#blank#}6{#/blank#} 7+4 13 {#blank#}7{#/blank#} 18 13 {#blank#}8{#/blank#} 17-5
12+8= 14-9= 89+2= 10+20+40=
63-3= 80-10= 11-4= 12-7+8=
20+40= 48+8= 90-80= 19-8-5=
13-7= 21+70= 20+60= 80-40+20=
50-{#blank#}1{#/blank#}=46+{#blank#}2{#/blank#} 75+{#blank#}3{#/blank#}=85-{#blank#}4{#/blank#}
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