作业帮简便计算：5.6*8+4.5/0.25=?7.5*【63.9/（7-2.5）】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/14 11:17:22
简便计算：5.6*8+4.5/0.25=?7.5*【63.9/（7-2.5）】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
简便计算：5.6*8+4.5/0.25=?7.5*【63.9/（7-2.5）】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
简便计算：5.6*8+4.5/0.25=?7.5*【63.9/（7-2.5）】=?5.5*8+4.5/0.125=?26.19+0.91/(3.6-2.9)=?
5.6*8+4.5/0.25
=5.6*8+4.5/(1/4)
=5.6*8+4.5*4
=44.8+18
=62.8
7.5*【63.9/（7-2.5）】
=7.5*【63.9/（4.5）】
=7.5*【0.9*71/（0.9*5）】
=7.5*【71/5】
=15/2*71/5
=3/2*71
=1.5*71
=106.5
5.5*8+4.5/0.125
=5.5*8+4.5/(1/8)
=5.5*8+4.5*8
=8*(4.5+5.5)
=8*10
=80
26.19+0.91/(3.6-2.9)
= 26.19+0.91/0.7
= 26.19+0.7*1.3/0.7
= 26.19+1.3
=27.49
5.6*8+4.5/0.25=(5+0.6)*8+(4+0.5)*4=5*8+0.6*8+4*4+0.5*4=40+4.8+16+2=62.8
5.6*8+4.5/0.25
=（5+0.6）*8+（4.5*4）/（0.25*4）
=5*8+0.6*8+4.5*2*2
=40+4.8+18
=62.8
7.5*[63.9/(7-2.5)]
=7.5*(0.9*71/4.5)
=7.5*(0.9*71/0.9/5)
=1.5*5*(71/5)
=1.5*71
...
全部展开
5.6*8+4.5/0.25
=（5+0.6）*8+（4.5*4）/（0.25*4）
=5*8+0.6*8+4.5*2*2
=40+4.8+18
=62.8
7.5*[63.9/(7-2.5)]
=7.5*(0.9*71/4.5)
=7.5*(0.9*71/0.9/5)
=1.5*5*(71/5)
=1.5*71
=3/2*71
=213/2
=106.5
5.5*8+4.5/0.125
=5.5*8+4.5*8/(0.125*8)
=8*(5.5+4.5)
=80
26.19+0.91/(3.6-2.9)
=26.19+0.91/0.7
=26.19+1.3
=27.49
(这题直接口算就可以……)
收起
5.6*8+4.5/0.25
=5.6*8+4.5/(1/4)
=5.6*8+4.5*4
=44.8+18
=62.8
7.5*【63.9/（7-2.5）】
=7.5*【63.9/（4.5）】
=7.5*【0.9*71/（0.9*5）】
=7.5*【71/5】
=15/2*71/5
=3/2*71
=1.5*7...
全部展开
5.6*8+4.5/0.25
=5.6*8+4.5/(1/4)
=5.6*8+4.5*4
=44.8+18
=62.8
7.5*【63.9/（7-2.5）】
=7.5*【63.9/（4.5）】
=7.5*【0.9*71/（0.9*5）】
=7.5*【71/5】
=15/2*71/5
=3/2*71
=1.5*71
=106.5
5.5*8+4.5/0.125
=5.5*8+4.5/(1/8)
=5.5*8+4.5*8
=8*(4.5+5.5)
=8*10
=80
收起
5.6*8+4.5/0.25 =5.6*8+4.5/(1/4) =5.6*8+4.5*4 =44.8+18 =62.8 7.5*【63.9/（7-2.5）】 =7.5*【63.9/（4.5）】