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
来源:学生作业帮 编辑:作业帮 分类:数学作业 时间:2024/07/07 10:56:01
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/(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
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
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