4*(25*65+25*28)简便计算

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4*(25*65+25*28)简便计算

4*(25*65+25*28)
=4*25*(65+28)
=100*93
=9300

你好:
4*(25*65+25*28)
=4×25×(65+28)
=100×93
=9300

=4*25*65+4*25*28
=6500+2800
=9300

4*(25*65+25*28)
=4*25*65+4*25*28
=100*65+100*28
=100*(65+28)
=100*93
=9300

等于4*25*65+4*25*28,等于100*65+100*28,等于6500+2800,等于9300.