来源:学生作业帮 编辑:大师作文网作业帮 分类:数学作业 时间:2024/11/11 11:57:00
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.