挑战数学题简便计算 378+475+99-675== 200-198+196-194+192……+8-6+4-2== 3333*2222/6666== 2006*2008-2005*2009==钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着
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![挑战数学题简便计算 378+475+99-675== 200-198+196-194+192……+8-6+4-2== 3333*2222/6666== 2006*2008-2005*2009==钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着](/uploads/image/z/3932304-24-4.jpg?t=%E6%8C%91%E6%88%98%E6%95%B0%E5%AD%A6%E9%A2%98%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97++378%2B475%2B99-675%3D%3D++200-198%2B196-194%2B192%E2%80%A6%E2%80%A6%2B8-6%2B4-2%3D%3D++3333%2A2222%2F6666%3D%3D++2006%2A2008-2005%2A2009%3D%3D%E9%92%A2%E7%AC%94%E7%9A%84%E4%BB%B7%E9%92%B1%E6%98%AFBBC%E8%A7%92%2C%E9%93%85%E7%AC%94%E7%9B%92%E7%9A%84%E4%BB%B7%E9%92%B1%E6%98%AFCA%E8%A7%92%2C%E6%A9%A1%E7%9A%AE%E7%9A%84%E4%BB%B7%E9%92%B1%E6%98%AFA%E8%A7%92%2C%E4%B8%80%E5%85%B1%E8%8A%B1%E4%BA%86ABC%E5%85%83%2C%E6%AD%A4%E6%97%B6%E8%BF%98%E5%89%A9%E4%B8%8B1%E8%A7%92%2CABC%E4%BB%A3%E8%A1%A8%E7%9D%80)
挑战数学题简便计算 378+475+99-675== 200-198+196-194+192……+8-6+4-2== 3333*2222/6666== 2006*2008-2005*2009==钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着
挑战数学题
简便计算
378+475+99-675
=
=
200-198+196-194+192……+8-6+4-2
=
=
3333*2222/6666
=
=
2006*2008-2005*2009
=
=
钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着不同的数字,一共买了多少元?(要求列算式)
挑战数学题简便计算 378+475+99-675== 200-198+196-194+192……+8-6+4-2== 3333*2222/6666== 2006*2008-2005*2009==钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着
378+475+99-675
=378+475-(475+200)+(100-1)
=277
200-198+196-194+192……+8-6+4-2
=2×99
=198
3333×2222÷6666
=3333×2×1111÷6666
=1111
2006×2008-2005×2009
=(2007×2007-1)-(2007×2007-4)
=3
钢笔的价钱是BBC角,铅笔盒的价钱是CA角,橡皮的价钱是A角,一共花了ABC元,此时还剩下1角,ABC代表着不同的数字,一共买了多少元?(要求列算式)
个位:C+A+A=C,A=5
十位:B+C+1=B,C=9
百位:B+1=A,B=4
ABC=549(元)