要简便方法计算.0.250.624= （2.8+0.5）2= 1042.5= 48*1.25=

分类: 作业答案 • 2022-08-04 21:56:17

问题描述：

要简便方法计算.
0.25*0.62*4= （2.8+0.5）*2= 104*2.5= 48*1.25=

答

0.25*0.62*4
=1/4 *0.62*4
=1/4 *4*0.62
=0.62
（2.8+0.5）*2
=2.8 *2+0.5*2
=5.6+1
=6.6
104*2.5
=104*5÷2
=520÷2
=260
48*1.25
=48*10÷8
=48÷8*10
=6*10
=60

要简便方法计算.0.25*0.62*4= （2.8+0.5）*2= 104*2.5= 48*1.25=