简便计算. 1.5×102= | 0.25×32×1.25= |
0.36×0.99+0.36×0.01= | 2.5×7.2= |
人气:230 ℃ 时间:2020-01-26 04:30:05
解答
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....
推荐
猜你喜欢