3.2*1.85+1.6*16.3简算!
=1.6*3.7+1.6*16.3
=1.6*(3.7+16.3)
=1.6*20
=32
亲:
所以 1.6*16.3 = 1.6*2*8.15 = 3.2*8.15
所以 3.2*1.85 + 1.6*16.3
=3.2*1.85 + 3.2*8.15
=(1.85+8.15)*3.2
=10*3.2
=32