江苏省江阴市20xx-20xx学年七年级数学下学期期中试题苏科版内容摘要:
x y ,则 xy __ ▲ . :“您今年多大。 ”教师风趣地说:“我像你这么大时,你才 5岁;你到我这么大时 ,我已经 44岁了 .”教师今年 __ ▲ 岁 . ,有三种卡片,其中边长为 a的正方形卡片 1张,边长分别为 a、 b的矩形卡片 6张,边长为 b的正方形卡片 9张.用这 16张卡片 拼成一个正方形,则这个正方形的边长为 __ ▲ . 18.如下图,图 1是长方形纸带, 将纸带沿 EF折叠成图 2,再沿 BF折叠成图 3,若图 3中∠ CFE=120176。 ,则图 1中的∠ DEF 的度数是 __ ▲ . 三、解答题 (每题 3分,共 12分 ) ( 1) 2031(2 ) ( 2)2 ( 2) 26 2 1 0 2 3 33 2 ( 2 )a a a a a ( 3) 2( 1) (1 2 )(1 2 )x x x (4) )1()3)(2( xxxx A DA C BA EA CA BA F DA C DBA EA F GBA A BA EA F GBA A 图 1 图 2 图。江苏省江阴市20xx-20xx学年七年级数学下学期期中试题苏科版
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