2.2×52+66×1.6的简便方法怎么做?
2个回答
2021-02-24
展开全部
运用乘法分配律,简便运算如下:
2.2×52+66×1.6
=2.2×52+2.2×30×1.6
=2.2×52+2.2×48
=2.2×(52+48)
=2.2×100
=220
2.2×52+66×1.6
=2.2×52+2.2×30×1.6
=2.2×52+2.2×48
=2.2×(52+48)
=2.2×100
=220
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