143+178*99+35的简便运算
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![143+178*99+35的简便运算](/uploads/image/z/68369-41-9.jpg?t=143%2B178%2A99%2B35%E7%9A%84%E7%AE%80%E4%BE%BF%E8%BF%90%E7%AE%97)
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143+178*99+35的简便运算
143+178*99+35的简便运算
143+178*99+35的简便运算
143+178×99+35
=(143+35)+178×99
=178×1+178×99
=178×(1+99)
=178×100
=17800
运用了加法结合律、乘法分配率(逆定理)解出此题.
143+35+178*99=178*1+178*99=178*100=17800
143+178×99+35
=143+35+178×100-178
=178+17800-178
=17800
=143+35+178*99
=178+178*99
=178*(1+99)
=178*100=17800
=尻你妈