四年级奥数练习题及答案:妈妈买鸡蛋(2)
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2018-02-07 16:23:55
答案与解析:
[(0.5×2+0.5)×2+0.5]×2
=(1.5×2+0.5)×2
=3.5×2=7(个)
答案与解析:
[(0.5×2+0.5)×2+0.5]×2
=(1.5×2+0.5)×2
=3.5×2=7(个)