1.theareaofastageinsquareshapeis676m2.finditslength.2.dadgivesaboxofcandiestomandyforherbirthday.theboxisacuboidwhichhaslength10cm,width6cmandvolume180cm.finditsheight.3.jackusesapieceofwiretofromanequila

　　1.theareaofastageinsquareshapeis676m2.finditslength.

　　2.dadgivesaboxofcandiestomandyforherbirthday.theboxisacuboidwhichhaslength10cm,width6cmandvolume180cm.finditsheight.

　　3.jackusesapieceofwiretofromanequilateraltriangleofside14cm.butmichellereformsittobeasquare.whatistheareaofthesquare?

　　4.francishad$150.heused20%oftheamounttobuystationeryand34%tobuyatoy.

　　a.howmuchdidhesaveheleave?

　　b.iffranicsaved50%oftheremainder,howmunchdidhesave?

　　5.misschuengaskedherstudentstocalculate18.84×31.27andcorrecttheanswertothenearestten.joe,kenandevaproposdthreedifferentcalculationmethods.trytocompletethefollowing.

　　a.joe:calculate18.84×31.27=___________

　　joe'sanswerwas___________(correcttothenearestten)

　　b.ken:writedoen18.84=___________(correcttonearestone)

　　31.27=___________(correcttonearestone)

　　multiplythetwoapproximatevalues_________×_________=_________

　　ken'sanswerwas________(correcttotheten)

　　c.eva:writedowen18.84=________(correcttotheten)

　　31.27=________(correcttotheten)

　　multiplythetwoapproximatevalues_________×_________=_________

　　eva'sanswerwas________(correcttotheten)

　　6.accordingtoquestion5whosemethodisthebest?_________