如题所述
第1个回答 2015-06-29
124x35+88x70
=62x2x35+88x70
=62x70+88x70
=(62+88)x70
=150x70
=10500本回答被网友采纳
=62x2x35+88x70
=62x70+88x70
=(62+88)x70
=150x70
=10500本回答被网友采纳
第2个回答 2015-06-29
124*35 = 31*4*5*7 = 31*7 * 20=217*20 = 4340
88*70 = （90-2）*70 = 6300-140=3160
88*70 = （90-2）*70 = 6300-140=3160
