Word文檔下載后可自行編輯1/12019年小學(xué)四年級數(shù)學(xué)《第四單元》測試試卷及答案36  ＜/span＞＜span＞154-54=＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞用簡便方法計(jì)算。＜/span＞＜br＞＜br＞＜span＞204×1572×99+72＜/span＞＜br＞＜br＞＜br＞＜span＞5×38×4×5＜/span＞＜span＞＜/span＞＜span＞    ＜/span＞＜span＞125×79＜/span＞＜br＞＜br＞＜br＞＜span＞67×101-67＜/span＞＜span＞    ＜/span＞＜span＞＜/span＞＜span＞ ＜/span＞＜span＞63×99＜/span＞＜br＞＜br＞＜span＞＜strong＞五、解決問題。＜/strong＞＜/span＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞自行車廠裝配一批自行車＜/span＞＜span＞,＜/span＞＜span＞原計(jì)劃每天裝＜/span＞＜span＞25＜/span＞＜span＞輛＜/span＞＜span＞,＜/span＞＜span＞需要＜/span＞＜span＞40＜/span＞＜span＞天完成。由于提高效率＜/span＞＜span＞,＜/span＞＜span＞實(shí)際＜/span＞＜span＞8＜/span＞＜span＞天完成＜/span＞＜span＞,＜/span＞＜span＞實(shí)際每天裝多少輛＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞下面三種球各買一個(gè)＜/span＞＜span＞,＜/span＞＜span＞一共付多少元＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/2016101715249.png?m=0.45675865277752403＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞ 永發(fā)超市運(yùn)來＜/span＞＜span＞4＜/span＞＜span＞箱毛巾＜/span＞＜span＞,＜/span＞＜span＞每包＜/span＞＜span＞5＜/span＞＜span＞條。一共運(yùn)來多少條毛巾＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/2016101715512.png?m=0.1299681397274124＞＜br＞＜br＞＜span＞4.＜/span＞＜span＞ 師傅和徒弟同時(shí)加工一種機(jī)器零件。師傅每時(shí)加工＜/span＞＜span＞42＜/span＞＜span＞個(gè)＜/span＞＜span＞,＜/span＞＜span＞徒弟每時(shí)加工＜/span＞＜span＞25＜/span＞＜span＞個(gè)。＜/span＞＜span＞4＜/span＞＜span＞時(shí)后＜/span＞＜span＞,＜/span＞＜span＞師傅和徒弟一共加工多少個(gè)零件＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞ 學(xué)校為＜/span＞＜span＞8＜/span＞＜span＞個(gè)班各配備了一臺飲水機(jī)和一個(gè)紙簍＜/span＞＜span＞,＜/span＞＜span＞一共花了多少元＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/201610171563.png?m=0.4857291559754213＞＜br＞＜br＞＜span＞6.＜/span＞＜span＞ 合唱組有＜/span＞＜span＞84＜/span＞＜span＞人＜/span＞＜span＞,＜/span＞＜span＞合唱組的人數(shù)是美術(shù)組的幾倍＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/2016101715640.png?m=0.4639422737187926＞＜br＞＜br＞＜br＞＜divstyle=text-align:center;＞＜strong＞＜fontcolor=#38761d＞2016年蘇教版小學(xué)四年級數(shù)學(xué)《第四單元》測驗(yàn)卷解析＜/font＞＜/strong＞＜/div＞＜br＞＜span＞一、＜/span＞＜span＞1＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ 乘、除法＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞加、減法＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞小括號里面的＜/span＞＜br＞＜br＞＜span＞小括號外面的＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞小括號里面的＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞中括號里面的＜/span＞＜br＞＜br＞＜span＞2＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ 減＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞加＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞乘＜/span＞＜br＞＜br＞＜span＞3＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞44＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞24＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞99＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞172＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞64＜/span＞＜span＞(＜/span＞＜span＞解析不唯一＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞二、＜/span＞＜span＞1＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞✕＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞2＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞√＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞3＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ √＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞4＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞✕＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞5＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞✕＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞6＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞✕＜/span＞＜br＞＜br＞＜span＞三、＜/span＞＜span＞1＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞B＜/span＞＜span＞2＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞A＜/span＞＜span＞3＜/span＞＜span＞.＜/span＞＜span＞ ＜/span＞＜span＞B＜/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＞1＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞81＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞0＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞8＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞80＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞10000＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞100＜/span＞＜br＞＜br＞＜span＞2＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞3060＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞7200＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞3800＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞9875＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞6700＜/span＞＜em＞＜span＞＜/span＞＜/em＞＜span＞6237＜/span＞＜br＞＜br＞＜span＞五、＜/span＞＜span＞1＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞25＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞40＜/span＞＜em＞＜span＞÷＜/span＞＜/em＞＜span＞8＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞125＜/span＞＜span＞(＜/span＞＜span＞輛＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞2＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞64＜/span＞＜em＞＜span＞+＜/span＞＜/em＞＜span＞78＜/span＞＜em＞＜span＞+＜/span＞＜/em＞＜span＞36＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞178＜/span＞＜span＞(＜/span＞＜span＞元＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞3＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞4＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞(＜/span＞＜span＞22＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞5＜/span＞＜span＞)＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞440＜/span＞＜span＞(＜/span＞＜span＞條＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞4＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞(＜/span＞＜span＞42＜/span＞＜em＞＜span＞+＜/span＞＜/em＞＜span＞25＜/span＞＜span＞)＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞4＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞268＜/span＞＜span＞(＜/span＞＜span＞個(gè)＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞5＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞(＜/span＞＜span＞125＜/span＞＜em＞＜span＞+＜/span＞＜/em＞＜span＞5＜/span＞＜span＞)＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞8＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞1040＜/span＞＜span＞(＜/span＞＜span＞元＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞6＜/span＞＜em＞＜span＞.＜/span＞＜/em＞＜span＞ ＜/span＞＜span＞84＜/span＞＜em＞＜span＞÷＜/span＞＜/em＞＜span＞[(＜/span＞＜span＞8＜/span＞＜em＞＜span＞+＜/span＞＜/em＞＜span＞6＜/span＞＜span＞)＜/span＞＜em＞＜span＞×＜/span＞＜/em＞＜span＞2＜/span＞＜span＞]＜/span＞＜em＞＜span＞=＜/span＞＜/em＞＜span＞3＜/span＞＜br＞＜br＞＜br＞＜divstyle=text-align:center;＞＜strong＞＜fontcolor=#ff0000＞2016年北師大版小學(xué)四年級數(shù)學(xué)《第四單元》測驗(yàn)卷＜/font＞＜/strong＞＜/div＞＜br＞＜span＞＜strong＞一、填上空題。＜/strong＞＜/span＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞∶24=＜/span＞()/4=2÷()=0.5＜/div＞＜div＞＜br＞＜span＞2.＜/span＞＜span＞將＜/span＞＜span＞8∶13＜/span＞＜span＞的前項(xiàng)擴(kuò)大到原來的＜/span＞＜span＞4＜/span＞＜span＞倍＜/span＞＜span＞,＜/span＞＜span＞要使比值不變＜/span＞＜span＞,＜/span＞＜span＞后項(xiàng)應(yīng)增加＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞甲數(shù)是乙數(shù)的＜/span＞＜span＞1.25＜/span＞＜span＞倍＜/span＞＜span＞,＜/span＞＜span＞甲數(shù)與乙數(shù)的最簡單的整數(shù)比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞4.＜/span＞＜span＞某養(yǎng)雞場公雞的只數(shù)是母雞的＜/span＞＜span＞,＜/span＞＜span＞公雞與母雞的只數(shù)比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞公雞占雞總只數(shù)的＜/span＞()/()。＜/div＞＜div＞＜br＞＜span＞5.＜/span＞＜span＞一個(gè)三角形的三個(gè)內(nèi)角的度數(shù)比是＜/span＞＜span＞3∶2∶1＜/span＞＜span＞,＜/span＞＜span＞這個(gè)三角形內(nèi)最大的角的度數(shù)是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞這是一個(gè)＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞三角形。＜/span＞＜br＞＜br＞＜span＞6.＜/span＞＜span＞兩個(gè)正方體的棱長的比是＜/span＞＜span＞2∶3＜/span＞＜span＞,＜/span＞＜span＞棱長總和的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞表面積的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞體積的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞7.＜/span＞＜span＞月季花朵數(shù)的＜/span＞＜span＞是玫瑰花朵數(shù)的＜/span＞＜span＞,＜/span＞＜span＞玫瑰花的朵數(shù)與月季花的朵數(shù)的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞8.＜/span＞＜span＞從甲地到乙地＜/span＞＜span＞,＜/span＞＜span＞小王要＜/span＞＜span＞50＜/span＞＜span＞分鐘＜/span＞＜span＞,＜/span＞＜span＞小李要＜/span＞＜span＞60＜/span＞＜span＞分鐘＜/span＞＜span＞,＜/span＞＜span＞小王和小李所用時(shí)間的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞),＜/span＞＜span＞小李和小王的速度比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜strong＞＜span＞二、是非題。＜/span＞＜span＞(＜/span＞＜span＞對的畫“＜/span＞＜span＞√＜/span＞＜span＞”＜/span＞＜span＞,＜/span＞＜span＞錯(cuò)的畫“＜/span＞＜span＞✕＜/span＞＜span＞”＜/span＞＜span＞)＜/span＞＜/strong＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞比的前項(xiàng)和后項(xiàng)同時(shí)乘或除以同一個(gè)數(shù)＜/span＞＜span＞,＜/span＞＜span＞比值不變。＜/span＞＜span＞＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞甲數(shù)是乙數(shù)的2/3＜/span＞＜span＞,＜/span＞＜span＞甲數(shù)與乙數(shù)的比值就是2/3＜/span＞＜span＞。＜/span＞＜span＞＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞比值是＜/span＞＜span＞0.75＜/span＞＜span＞的比有無數(shù)個(gè)。＜/span＞＜span＞＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞4.5＜/span＞＜span＞分＜/span＞＜span＞∶0.6＜/span＞＜span＞時(shí)＜/span＞＜span＞,＜/span＞＜span＞化簡后的比是＜/span＞＜span＞5∶6＜/span＞＜span＞。＜/span＞＜span＞＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞被減數(shù)與差的比是＜/span＞＜span＞8∶5＜/span＞＜span＞,＜/span＞＜span＞減數(shù)與差的比是＜/span＞＜span＞3∶5＜/span＞＜span＞。＜/span＞＜span＞＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜br＞＜strong＞＜br＞＜span＞三、選擇題。＜/span＞＜span＞(＜/span＞＜span＞把正確解析的序號填在括號里＜/span＞＜span＞)＜/span＞＜/strong＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞一本書＜/span＞＜span＞,＜/span＞＜span＞已看了總頁數(shù)的3/5＜/span＞＜span＞,＜/span＞＜span＞剩下的頁數(shù)與已看的頁數(shù)的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.3∶5＜/span＞＜span＞       ＜/span＞＜span＞B.2∶5＜/span＞＜span＞       ＜/span＞＜span＞＜/span＞＜span＞  ＜/span＞＜span＞C.2∶3＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞一個(gè)平行四邊形與一個(gè)三角形的底的比是＜/span＞＜span＞1∶2＜/span＞＜span＞,＜/span＞＜span＞高的比是＜/span＞＜span＞1∶2＜/span＞＜span＞,＜/span＞＜span＞面積的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.1∶1＜/span＞＜span＞＜/span＞＜span＞        ＜/span＞＜span＞B.1∶2＜/span＞＜span＞＜/span＞＜span＞           ＜/span＞＜span＞C.1∶4＜/span＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞某工廠從甲車間調(diào)出1/10＜/span＞＜span＞的人給乙車間＜/span＞＜span＞,＜/span＞＜span＞甲、乙兩車間的人數(shù)正好相等。原來甲、乙兩車間的人數(shù)比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.10∶9＜/span＞＜span＞＜/span＞＜span＞       ＜/span＞＜span＞B.5∶4＜/span＞＜span＞＜/span＞＜span＞               ＜/span＞＜span＞C.11∶10＜/span＞＜br＞＜br＞＜span＞4.120＜/span＞＜span＞克鹽水中含鹽＜/span＞＜span＞20＜/span＞＜span＞克＜/span＞＜span＞,＜/span＞＜span＞鹽與水的質(zhì)量比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.1∶5＜/span＞＜span＞＜/span＞＜span＞       ＜/span＞＜span＞B.1∶6＜/span＞＜span＞＜/span＞＜span＞              ＜/span＞＜span＞C.5∶6＜/span＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞同修一條路＜/span＞＜span＞,＜/span＞＜span＞甲隊(duì)＜/span＞＜span＞2＜/span＞＜span＞小時(shí)修＜/span＞＜span＞7＜/span＞＜span＞千米＜/span＞＜span＞,＜/span＞＜span＞乙隊(duì)＜/span＞＜span＞3＜/span＞＜span＞小時(shí)修＜/span＞＜span＞10＜/span＞＜span＞千米＜/span＞＜span＞,＜/span＞＜span＞甲、乙兩隊(duì)的工作效率的比是＜/span＞＜span＞(＜/span＞＜span＞＜/span＞＜span＞)＜/span＞＜span＞。＜/span＞＜br＞＜br＞＜span＞A.20∶21＜/span＞＜span＞  ＜/span＞＜span＞＜/span＞＜span＞   ＜/span＞＜span＞B.21∶20＜/span＞＜span＞   ＜/span＞＜span＞＜/span＞＜span＞       ＜/span＞＜span＞C.7∶10＜/span＞＜br＞＜strong＞＜br＞＜span＞四、先化簡下面各比＜/span＞＜span＞,＜/span＞＜span＞再求比值。＜/span＞＜/strong＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/20161017151250.png?m=0.9227836238124485＞＜br＞＜br＞＜span＞＜strong＞五、解決問題。＜/strong＞＜/span＞＜br＞＜br＞＜span＞1.＜/span＞＜span＞王大爺栽了楊樹和柳樹共＜/span＞＜span＞400＜/span＞＜span＞棵＜/span＞＜span＞,＜/span＞＜span＞楊樹與柳樹棵數(shù)的比是＜/span＞＜span＞5∶3＜/span＞＜span＞,＜/span＞＜span＞楊樹、柳樹各栽了多少棵＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞2.＜/span＞＜span＞某種混凝土是黃沙、水泥和石子按＜/span＞＜span＞4∶3∶5＜/span＞＜span＞攪拌而成的＜/span＞＜span＞,＜/span＞＜span＞一個(gè)建筑工地需混凝土＜/span＞＜span＞60＜/span＞＜span＞噸＜/span＞＜span＞,＜/span＞＜span＞需黃沙、水泥、石子各多少噸＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞3.＜/span＞＜span＞一種藥水是藥粉和水按＜/span＞＜span＞1∶30＜/span＞＜span＞的比配成的＜/span＞＜span＞,＜/span＞＜span＞現(xiàn)在有藥粉＜/span＞＜span＞30＜/span＞＜span＞千克＜/span＞＜span＞,＜/span＞＜span＞可以配制多少千克的藥水＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞4.＜/span＞＜span＞小明的媽媽按同樣的比準(zhǔn)備＜/span＞＜span＞420＜/span＞＜span＞克早餐＜/span＞＜span＞,＜/span＞＜span＞各種食物分別要準(zhǔn)備多少克＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜imgsrc=//./uploadimages/2016/1017/2016101715145.png?m=0.1590471540319116＞＜br＞＜br＞＜span＞5.＜/span＞＜span＞甲、乙兩車分別從相距＜/span＞＜span＞560＜/span＞＜span＞千米的兩地相對開出＜/span＞＜span＞,＜/span＞＜span＞經(jīng)過＜/span＞＜span＞8＜/span＞＜span＞小時(shí)相遇＜/span＞＜span＞,＜/span＞＜span＞已知兩車的速度比是＜/span＞＜span＞4∶3＜/span＞＜span＞,＜/span＞＜span＞ 兩車的速度各是多少＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞6.＜/span＞＜span＞圖書室買來＜/span＞＜span＞540＜/span＞＜span＞本新書＜/span＞＜span＞,＜/span＞＜span＞其中＜/span＞＜span＞是連環(huán)畫＜/span＞＜span＞,＜/span＞＜span＞其余的是文藝書和科技書＜/span＞＜span＞,＜/span＞＜span＞文藝書和科技書的本數(shù)的比是＜/span＞＜span＞3∶2＜/span＞＜span＞。三種書各有多少本＜/span＞＜span＞?＜/span＞＜br＞＜br＞＜span＞＜strong＞六、附加題。＜/strong＞＜/span＞＜br＞＜br＞＜span＞一瓶鹽水＜/span＞＜span＞,＜/span＞＜span＞鹽和水的質(zhì)量比是＜/span＞＜span＞1∶24＜/span＞＜span＞,＜/span＞＜span＞如果再放入＜/span＞＜span＞75＜/span＞＜span＞克水＜/span＞＜span＞,＜/span＞＜span＞那么鹽和水的質(zhì)量比是＜/span＞＜span＞1∶27＜/span＞＜span＞,＜/span＞＜span＞原來瓶內(nèi)的鹽水有多少克＜/span＞＜span＞?＜/span＞＜br＞＜span＞ ＜/span＞＜br＞＜br＞＜divstyle=text-align:center;＞＜strong＞＜fontcolor=#38761d＞2016年北師大版小學(xué)四年級數(shù)學(xué)《第四單元》測驗(yàn)卷參考解析＜/font＞＜/strong＞＜/div＞＜br＞＜span＞一、＜/span＞＜/div＞＜div＞＜span＞1＜/span＞、＜span＞122 4＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞2＜/span＞、＜span＞39＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞3＜/span＞、＜span＞5∶4＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞4＜/span＞、＜span＞3∶5 3/8＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞5＜/span＞、＜span＞90°＜/span＞＜span＞  ＜/span＞＜span＞直角＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞6＜/span＞、＜span＞2∶34∶98∶27＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞7＜/span＞、＜span＞9∶10＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞8＜/span＞、＜span＞5∶65∶6＜/span＞＜br＞＜br＞＜span＞二、＜/span＞＜span＞1＜/span＞＜span＞.＜/span＞＜span＞✕＜/span＞＜span＞＜/span＞＜span＞2＜/span＞＜span＞.＜/span＞＜span＞√＜/span＞＜span＞＜/span＞＜span＞3＜/span＞＜span＞.＜/span＞＜span＞√＜/span＞＜span＞＜/span＞＜span＞4＜/span＞＜span＞.＜/span＞＜span＞✕＜/span＞＜span＞＜/span＞＜span＞5＜/span＞＜span＞.＜/span＞＜span＞√＜/span＞＜br＞＜br＞＜span＞三、＜/span＞＜span＞1＜/span＞＜span＞.C＜/span＞＜span＞2＜/span＞＜span＞.B＜/span＞＜span＞3＜/span＞＜span＞.B＜/span＞＜span＞4＜/span＞＜span＞.A＜/span＞＜span＞5＜/span＞＜span＞.B＜/span＞＜br＞＜br＞＜span＞四、＜/span＞＜span＞5∶25/2＜/span＞＜span＞1∶41/4＜/span＞＜span＞7∶67/6＜/span＞＜span＞3∶13＜/span＞＜span＞ ＜/span＞＜/div＞＜div＞＜span＞＜br＞＜/span＞＜/div＞＜div＞＜span＞7∶171∶31/3＜/span＞＜span＞7∶27/2＜/span＞＜span＞5∶15＜/span＞＜br＞＜br＞＜span＞五、＜/span＞＜span＞1＜/span＞＜span＞.5+3=8＜/span＞＜span＞楊樹＜/span＞＜span＞:＜/span＞＜span＞400×＜/span＞＜span＞=250＜/span＞＜span＞(＜/span＞＜span＞棵＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞柳樹＜/span＞＜span＞:＜/span＞＜span＞400×＜/span＞＜span＞=150＜/span＞＜span＞(＜/span＞＜span＞棵＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞2＜/span＞＜span＞.4+3+5=12＜/span＞＜span＞黃沙＜/span＞＜span＞:＜/span＞＜span＞60×4/12＜/span＞＜span＞=20＜/span＞＜span＞(＜/span＞＜span＞噸＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞水泥＜/span＞＜span＞:＜/span＞＜span＞60×3/12＜/span＞＜span＞=15＜/span＞＜span＞(＜/span＞＜span＞噸＜/span＞＜span＞)＜/span＞＜span＞＜/span＞＜span＞石子＜/span＞＜span＞:＜/span＞＜span＞60×5/12＜/span＞＜span＞=25＜/span＞＜span＞(＜/span＞＜span＞噸＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞3＜/span＞＜span＞.30×＜/span＞＜span＞(＜/span＞＜span＞1+30＜/span＞＜span＞)＜/span＞＜span＞=930＜/span＞＜span＞(＜/span＞＜span＞千克＜/span＞＜span＞)＜/span＞＜br＞＜br＞＜span＞4＜/span＞＜span＞.100∶50∶200=2∶1∶42+1+4=7＜/span＞＜br＞＜br＞＜span＞面包＜/span＞＜span＞:＜/span＞＜span＞420×2/7＜/span＞＜