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2222×2222+8888×1944·5简便运算?
1个回答
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2222x2222+8888x1944.5
=2222x4x555.5+8888x1944.5
=8888(555.5+1944.5)
=8888x2500
=22220000
=2222x4x555.5+8888x1944.5
=8888(555.5+1944.5)
=8888x2500
=22220000
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