用简便方法计算:56×74+85×44+11×56.
问题描述:
用简便方法计算:56×74+85×44+11×56.
答
56×74+85×44+11×56,
=56×(74+11)+85×44,
=56×85+85×44,
=(56+44)×85,
=100×85,
=8500.