2019年人教版小学四年级数学上册《第三单元》测试试卷及答案

Word文档下载后可自行编辑1/12019年人教版小学四年级数学上册《第三单元》测试试卷及答案＜divstyle=text-align:center;＞＜strong＞＜fontcolor=#ff0000＞2016年人教版小学四年级数学上册第三单元测验卷＜/font＞＜/strong＞＜/div＞＜br＞＜span＞＜strong＞一、填上空题。＜/strong＞＜/span＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞线段有＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个端点＜/span＞＜span＞,＜/span＞＜span＞射线有＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个端点。＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞角小于＜/span＞＜span＞90°＜/span＞＜span＞,＜/span＞＜span＞大于＜/span＞＜span＞90°＜/span＞＜span＞而小于＜/span＞＜span＞180°＜/span＞＜span＞的角叫做＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞1＜/span＞＜span＞平角＜/span＞＜span＞=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞直角＜/span＞＜span＞    ＜/span＞＜span＞1＜/span＞＜span＞周角＜/span＞＜span＞=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞直角＜/span＞＜span＞        ＜/span＞＜span＞1＜/span＞＜span＞周角＜/span＞＜span＞=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞平角＜/span＞＜span＞ ＜/span＞＜br＞＜br＞＜span＞4.＜/span＞＜span＞下图中＜/span＞＜span＞,＜/span＞＜span＞∠＜/span＞＜span＞1＜/span＞＜span＞与＜/span＞＜span＞∠＜/span＞＜span＞2＜/span＞＜span＞组成的角是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞角＜/span＞＜span＞,＜/span＞＜span＞已知＜/span＞＜span＞∠＜/span＞＜span＞1=40°＜/span＞＜span＞,＜/span＞＜span＞那么＜/span＞＜span＞∠＜/span＞＜span＞2=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。    ＜/span＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930141753.png?m=0.7732279030901228＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞在时钟上＜/span＞＜span＞,＜/span＞＜span＞时针与分针成＜/span＞＜span＞90°＜/span＞＜span＞是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞时与＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞时＜/span＞＜span＞;＜/span＞＜span＞时针和分针形成平角的时刻是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞＜strong＞二、写出下面用三角尺拼出的角的度数。＜/strong＞＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930141834.png?m=0.940484448875373＞＜br＞＜strong＞＜br＞＜span＞三、选择题。＜/span＞＜span＞(＜/span＞＜span＞在括号里填上正确解析的序号＜/span＞＜span＞)＜/span＞＜span＞ ＜/span＞＜/strong＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞过一点可以画＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞条射线。＜/span＞＜br＞＜br＞＜span＞A.＜/span＞＜span＞1＜/span＞＜span＞  ＜/span＞＜span＞B.＜/span＞＜span＞2＜/span＞＜span＞ ＜/span＞＜span＞C.＜/span＞＜span＞3＜/span＞＜span＞ ＜/span＞＜span＞D.＜/span＞＜span＞无数＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞角的两条边是两条＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.＜/span＞＜span＞直线＜/span＞＜span＞＜/span＞＜span＞B.＜/span＞＜span＞射线＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞C.＜/span＞＜span＞线段＜/span＞＜span＞＜/span＞＜span＞D.＜/span＞＜span＞曲线＜/span＞＜br＞＜br＞＜span＞3.9＜/span＞＜span＞:＜/span＞＜span＞30＜/span＞＜span＞,＜/span＞＜span＞时针与分针形成的角是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.＜/span＞＜span＞锐角＜/span＞＜span＞＜/span＞＜span＞B.＜/span＞＜span＞直角＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞C.＜/span＞＜span＞钝角＜/span＞＜span＞＜/span＞＜span＞D.＜/span＞＜span＞平角＜/span＞＜br＞＜br＞＜span＞4.＜/span＞＜span＞在一个＜/span＞＜span＞5＜/span＞＜span＞倍的放大镜下看一个＜/span＞＜span＞5°＜/span＞＜span＞的角＜/span＞＜span＞,＜/span＞＜span＞看到的角是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.＜/span＞＜span＞ ＜/span＞＜span＞5°＜/span＞＜span＞   ＜/span＞＜span＞＜/span＞＜span＞B.＜/span＞＜span＞ ＜/span＞＜span＞25°＜/span＞＜span＞ ＜/span＞＜span＞ ＜/span＞＜span＞C.30°＜/span＞＜span＞＜/span＞＜span＞D.＜/span＞＜span＞ ＜/span＞＜span＞45°＜/span＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞可以测出长度的是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.＜/span＞＜span＞直线＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞B.＜/span＞＜span＞射线＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞C.＜/span＞＜span＞线段＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞D.＜/span＞＜span＞角的边＜/span＞＜br＞＜br＞＜span＞＜strong＞四、给下面的角分类。＜/strong＞＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142012.png?m=0.8381484472644947＞＜br＞＜br＞＜strong＞＜span＞五、先量一量＜/span＞＜span＞,＜/span＞＜span＞再在＜/span＞＜/strong＞＜strong＞○＜/strong＞＜strong＞＜span＞里填上“＜/span＞＜span＞>＜/span＞＜span＞”或“＜/span＞＜span＞<＜/span＞＜span＞”。＜/span＞＜/strong＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/201693014213.png?m=0.4904035341177646＞＜br＞＜br＞＜span＞＜strong＞六、量出时针与分针所成的角度。＜/strong＞＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142237.png?m=0.7162546575276638＞＜br＞＜strong＞＜br＞＜span＞七、按要求画一画。＜/span＞＜/strong＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞以＜/span＞＜em＞＜span＞A＜/span＞＜/em＞＜span＞点为顶点画一个＜/span＞＜span＞50°＜/span＞＜span＞的角＜/span＞＜span＞,＜/span＞＜span＞并在角的一边上截一条＜/span＞＜span＞3＜/span＞＜span＞厘米长的线段。＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142330.png?m=0.5414149277754534＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞用合适的方法画出下面度数的角。＜/span＞＜br＞＜br＞＜span＞135°110°72°＜/span＞＜br＞＜br＞＜span＞＜strong＞八、看图填一填。＜/strong＞＜/span＞＜br＞＜br＞＜span＞图中有＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞条射线＜/span＞＜span＞,(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个角＜/span＞＜span＞,＜/span＞＜span＞其中有＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个直角＜/span＞＜span＞,(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个锐角＜/span＞＜span＞,(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞个钝角。＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142415.png?m=0.2602388357897758＞＜br＞＜strong＞＜br＞＜span＞九、看图计算。＜/span＞＜/strong＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞已知＜/span＞＜span＞∠＜/span＞＜span＞1=35°＜/span＞＜span＞,＜/span＞＜span＞那么＜/span＞＜span＞∠＜/span＞＜span＞2=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞3=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞4=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞＜imgsrc=//./uploadimages/2016/0930/2016930142551.png?m=0.7619137721122597＞ ＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞已知＜/span＞＜span＞∠＜/span＞＜span＞1=65°＜/span＞＜span＞,＜/span＞＜span＞那么＜/span＞＜span＞∠＜/span＞＜span＞2=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞3=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞4=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/201693014272.png?m=0.44842602282413857＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞已知＜/span＞＜span＞∠＜/span＞＜span＞1=30°＜/span＞＜span＞,＜/span＞＜span＞那么＜/span＞＜span＞∠＜/span＞＜span＞2=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞3=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞∠＜/span＞＜span＞4=＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142742.png?m=0.6356541510208917＞＜br＞＜br＞＜strong＞＜span＞十、三个正方形的摆放如下图＜/span＞＜span＞,＜/span＞＜span＞已知＜/span＞＜span＞∠＜/span＞＜span＞2=30°＜/span＞＜span＞,＜/span＞＜span＞∠＜/span＞＜span＞3=45°＜/span＞＜span＞,＜/span＞＜span＞求＜/span＞＜span＞∠＜/span＞＜span＞1＜/span＞＜span＞。＜/span＞＜/strong＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/0930/2016930142819.png?m=0.497324480740035＞＜br＞＜br＞＜br＞＜divstyle=text-align:center;＞＜strong＞＜fontcolor=#38761d＞2016年人教版小学四年级数学上册第三单元测验卷参考解析＜/font＞＜/strong＞＜/div＞＜br＞＜span＞一、＜/span＞＜span＞1＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞21＜/span＞＜span＞2＜/span＞＜span＞.＜/span＞＜span＞锐＜/span＞＜span＞＜/span＞＜span＞钝角＜/span＞＜span＞＜/span＞＜span＞3＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞242＜/span＞＜span＞4＜/span＞＜span＞.＜/span＞＜span＞平＜/span＞＜span＞140°＜/span＞＜span＞    ＜/span＞＜span＞5＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞396＜/span＞＜span＞时＜/span＞＜br＞＜br＞＜span＞二、＜/span＞＜span＞105°120°75°＜/span＞＜br＞＜br＞＜span＞三、＜/span＞＜span＞1＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞D＜/span＞＜span＞2＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞B＜/span＞＜span＞3＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞C＜/span＞＜span＞4＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞A＜/span＞＜span＞5＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞C＜/span＞＜br＞＜br＞＜span＞四、＜/span＞＜span＞锐角＜/spa