用简便的方法计算99.9×21+33.3×37他的简便方法怎样算?
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99.9x21+33.3x37
=33.3x3x21+33.3x37
=33.3x63+33.3x37
=33.3x(63+37)
=33.3x100
=3330
=33.3x3x21+33.3x37
=33.3x63+33.3x37
=33.3x(63+37)
=33.3x100
=3330
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展开全部
99.9×21+33.3×37
=33.3×3×21+33.3×37
=33.3×63+33.3×37
=33.3×(63+37)
=33.3×100
=3330
=33.3×3×21+33.3×37
=33.3×63+33.3×37
=33.3×(63+37)
=33.3×100
=3330
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展开全部
99.9×21+33.3×37
=33.3×63+33.3×37
=33.3×100
=3330
=33.3×63+33.3×37
=33.3×100
=3330
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已踩过<
评论
收起
你对这个回答的评价是?
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