①1.5×102=1.5×100+1.5×2=150+3=153；②0.25×32×1.25=（0.25×4）×（8×1.25）=1×10=10；③0.36×0.99+0.36×0.01=0.36×（0.99+0.01）=0.36×1=0.36；④2.5×7.2=（2.5×4）×1.8=10×1.8=18．...