试题 试卷
题型:单选题 题类:常考题 难易度:容易
万以内笔算加法(不含连加) 2515 10
5376+2819=( )
例如468+439,精确计算468+439=907,用整十或整百数估算470+440=910
856+95,精确计算856+95={#blank#}1{#/blank#},用整十或整百数估算{#blank#}2{#/blank#}+{#blank#}3{#/blank#}={#blank#}4{#/blank#}
200+699{#blank#}1{#/blank#}900 600{#blank#}2{#/blank#}1000-452
514-28{#blank#}3{#/blank#}405+52 152+29{#blank#}4{#/blank#}202-21
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