简便计算．1.5×102= 0.25×32×1.25= 0.36×0.99+0.36×0.01= 2.5×7.2=

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．