![Notallmathskillsarelearnedintheclassroom．Someofthemcome...]( "Notallmathskillsarelearnedintheclassroom．Someofthemcome...")
- 問題詳情：Notallmathskillsarelearnedintheclassroom．Someofthemcomenaturally．Considerthesplit-secondcalculations youmakewhenyouestimate（估計）thenumberofemptyseatsontheschoolbusorthenumberofcookiesinacookiejar．Theseestimatescanoftenbedonewithoutcounting．That'...
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