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Unit6Howmanypensarethere?这有多少支笔？Whattimeisit?Whattimeisit?ReviewpenpencilrulerbookWhat’sthis?ReviewrulersHowmanyrulersarethere?有多少根尺子呢？count数eightrulersHowmanycatsarethere?Thirteencats.thirteenfourteenfifteensixteenseventeeneighteennineteentwenty11161217131814191520elevensixteentwelveseventeenthirteeneighteenfourteennineteenfifteentwentyLet’scount.(数一数）Howmanypencilsarethere?Fifteenpencils.Howmanyelephantsarethere?Nineteenelephants.six+nine=____ten+three=____fifteenthirteen算一算six+twelve=____nineteen-four=____eighteenfifteenHowmanyducksarethere?Fiveducks.frogs(青蛙）duckspigsapplesthreefivefifteenseven