UNIT 3 LET'S DO MATH LESSON 16 课件

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1、UNIT3LET’SDOMATHLESSON1613~19皆以后缀-teen结尾13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nineteenLookandlearn13141516Againthirteenfifteenfourteensixteen18171920seventeeneighteennineteentwentyLet’sdoit¥15¥2Iwantdobuyabookandtwopencils.Thebookis15Yuan.Thepenc

2、ilsare4Yuan.HowmuchmoneydoIneed?15+4=19Fifteenplusfourisnineteen.YouneednineteenYuan.Iwantdobuyapenandthreeerasers.Thepenis14Yuan.Theerasersare3Yuan.HowmuchmoneydoIneed?¥1¥1414+3=17Fourteenplusthreeisseventeen.YouneedseventeenYuan.Iwantdobuyapencilcaseandoneruler.Thebo

3、okis13Yuan.Theruleris3Yuan.HowmuchmoneydoIneed?¥3¥1313+3=16Thirteenplusthreeissixteen.YouneedsixteenYuan.Iwantdobuyapencilcaseandtwopencils.Thebookis13Yuan.Thepencilsare4Yuan.HowmuchmoneydoIneed?¥13¥213+4=17Thirteenplusfourisseventeen.YouneedseventeenYuan.Practice1.Thi

4、rteenplusoneis_______?2.Thirteenplusfouris________?3.fifteenplusfouris_______?fourteenseventeennineteen4.Sixteenplustwois_______?5.Seventeenplusthreeis_______?4.Twelveplusoneis_______?eighteenthirteentwentyHomework:回家后用英文从十三数到二十，数给爸爸妈妈听。