【文档说明】清华版英语三年级上册《unit 3 let's do math lesson 16》PPT课件(共15页).ppt，共(15)页，1.021 MB，由小喜鸽上传

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UNIT3LET’SDOMATHLESSON1613~19皆以后缀-teen结尾13thirteen14fourteen15fifteen16sixteen17seventeen18eighteen19nin

eteenLookandlearn13141516Againthirteenfifteenfourteensixteen18171920seventeeneighteennineteentwentyLet’sdoit¥15¥2Iwantdobuyabookandtw

opencils.Thebookis15Yuan.Thepencilsare4Yuan.HowmuchmoneydoIneed?15+4=19Fifteenplusfourisnineteen.YouneednineteenYuan.Iwantdobuyapenandt

hreeerasers.Thepenis14Yuan.Theerasersare3Yuan.HowmuchmoneydoIneed?¥1¥1414+3=17Fourteenplusthreeisseventeen.YouneedseventeenY

uan.Iwantdobuyapencilcaseandoneruler.Thebookis13Yuan.Theruleris3Yuan.HowmuchmoneydoIneed?¥3¥1313+3=16Thirteenplusthreeissixteen.YouneedsixteenYua

n.Iwantdobuyapencilcaseandtwopencils.Thebookis13Yuan.Thepencilsare4Yuan.HowmuchmoneydoIneed?¥13¥213+4=17Thirteenplusfourisseventeen.Youneedse

venteenYuan.Practice1.Thirteenplusoneis_______?2.Thirteenplusfouris________?3.fifteenplusfouris_______?fourteenseventeenni

neteen4.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。