冀教版数学六年级上册第一单元测试题及答案
第一单元测试题及答案一、填空题。1.丫丫画一个直径是7厘米的圆,圆规两脚之间的距离应该是( )厘米。2.圆的对称轴是直径所在的( ),半圆有( )条对称轴。3.画圆时,( )决定圆的位置,( )决定圆的大小。4.一个半圆可以分成( )个圆心角是30°的扇形。5.长方形的宽是( )cm,长方形的长是( )cm,长方形的面积是()cm2。6.在一个边长是4厘米的正方形中画一个最大的圆,圆规两脚之间的距离是( )厘米,如果画一个最大的半圆,圆规两脚之间的距离是()厘米。二、选择题。(把正确答案的序号填在括号里)1.直径是( )。A.直线 B.射线 C.线段2.把一张圆形纸...
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