期末测试题
期末测试题及答案一、填空题。(10分)1.根据21×56=1176,可知2.1×0.56=( ),11.76÷5.6=( )2.在一位数中,不是偶数的合数是( ),不是奇数的质数是( )。3.两个质数的和是36,差是22,这两个质数的积是( )。4.时针从“6”顺时针旋转90°到“( )”;时针从“3”逆时针旋转90°到“( )”。5.一个梯形的上底是8.5厘米,下底是12.8厘米,高是5厘米,它的面积是( )平方厘米。6.一个直角三角形的斜边是10厘米,两条直角边分别是8厘米和6厘米,这个直角三角形的面积是( )平方厘米,斜边上的高是( )厘米。二、选择题。(把正确答案的...
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