128 11/16×10 3/5＋71 15/16×3/5
=128 11/16×(10+ 3/5)+71 15/16×3/5
=128 11/16×10+ 128 11/16×3/5+71 15/16×3/5
=(128+11/16)*10+(128 11/16+71 15/16)*3/5
=1280+110/16+200 5/8*3/5
=1286 7/8+200 3/8
=1487 1/4
简便计算：128 11/16×10 3/5＋71 15/16×3/5
128 11/16×10 3/5＋71 15/16×3/5
=128 11/16×(10+ 3/5)+71 15/16×3/5
=128 11/16×10+ 128 11/16×3/5+71 15/16×3/5
=(128+11/16)*10+(128 11/16+71 15/16)*3/5
=1280+110/16+200 5/8*3/5
=1286 7/8+200 3/8
=1487 1/4