三年级英语上册 unit6 lesson21（2）一课一练 北京版

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1、UNIT6IHAVEFIFTYMARKERSLesson21同步练习一、拍拍手,读读下面的歌谣。AplusBis100.AminusBis20.Ais60,Bis40.AplusBis90.AminusBis50.Ais70,Bis20.AplusBis70.AminusBis10.Ais40,Bis30.二、读读写写。三、选择填空。()1.Look________thenumbersontheblackboard.A.onB.inC.at()2.________canguessthemissingnumbers?A.WhatB.WhenC.Who()3.Fi

2、fty________tenisforty.A.minusB.plusC.and()4.Forty________twentyissixty.A.minuB.plusC.and()5.Themissingnumbers________eightyandseventy.A.isB.areC.am四、照样子,计算。例:Eightyminustwentyissixty.1.________________________________2.________________________________3.______________________________

3、__4.________________________________5.________________________________五、从方框中选出合适的词填空。minusfiftymarkerspluserasers1.Ihavemany________.Icandrawpictureswiththem.2.Hehasthree________.3.MyfriendJimhas________books.4.Ten________twentyisthirty.5.Ninety________thirtyissixty.参考答案一、略二、略三、1.C2

4、.C3.A4.B5.B四、1.Onehundredminusfortyissixty.2.Seventyminustwentyisfifty.3.Ninetyplustenisonehundred.4.Thirtyplusfortyisseventy.5.Fortyplusfortyiseighty.五、1.markers2.erasers3.fifty4.plus5.minus