Question

简便计算63×88 83×77

Answer 1

63×88+83×77
=7x9x8x11+83x77
=(8x9)x(7x11)+83x77
=72x77+3x77
=77x(72+83)
=77x155
=(80-3)x155
=80x155-3x155
=12400-465
=12400-(500-35)
=12400-500+35
=11900+35
=11935
谢谢，请采纳

Answer 2

63×88
=63×80+63×8
=60x80+3×80+60×8+3×8
=4800+240+480+24
=5544
83×77
=80×70+80×7+3×70+3×7
=5600+560+210+21
=6391