94×34
=(100-6)×34
=100×34-6×34
=3400-204
=3196
乘法分配律原式。主要特点(a±b)×c=ac±bc或c×(a±b)=ac±bc。
如:(40+8)×25
=40×25+8×25
=1000+200
=1200
94×34
=(100-6)×34
=100×34-6×34
=3400-204
=3196
乘法分配律原式。主要特点(a±b)×c=ac±bc或c×(a±b)=ac±bc。
如:(40+8)×25
=40×25+8×25
=1000+200
=1200
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