专项提升卷:万以内的加减法 含答案
专项提升卷2万以内的加减法提升点1:运用加法与减法各部分间的关系解决问题提升点2:运用万以内的加减法解决数字谜问题)3.9☆-□6=23 ☆=( ) □=( )☆6+4□=78 ☆=( ) □=( )6.猜一猜:后面藏着几?1/5提升点3:三位数加减两、三位数的估算的实际应用)(2)买一个和一部,大约需要多少钱?(3)买一台比买一个贵多少钱?2/58.电影院一共有420个座位。他们一起去看电影,估一估,他们能全部坐着看电影吗?3/5答案1.59 332.66 315 62 377 241 1953.9 7 [点拨]个位上6+3=9,十位上9-2=7。3 2 [点拨]...
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