0.88×0.76+0.48×0.44=0.88×0.76+0.24×0.88=0.88×(0.76+0.24)=0.88
0.888×0.76+0.48×0.444=0.444×（2×0.76+0.48）=0.444×（1.52+0.48）=0.444×2=0.888
