(7.44+5.96)-(123.1-23.1)要怎
编辑: admin 2017-23-02
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4
(7.44+5.96)-(123.1-23.1)
=(7.4+0.04+5.96)-(123.1-23.1)
=(7.4+6)+100
=13.4+100
=113.4
类似问题
类似问题1:1.23×4.7+0.123×53的简便运算[数学科目]
1.23×4.7+0.123×53
=0.123×47+0.123×53
=0.123×(47+53)
=0.123×100
=12.3
类似问题2:45.6*1.23/78.9/456*7.89/123怎么简便计算[数学科目]
(45.6*1.23*7.89)/(78.9*456*123)=0.00001/0.1=0.0001
类似问题3:1.23×45.6×0.789÷4.56÷7.89÷0.123=(简便运算)[数学科目]
1.23×45.6×0.789÷4.56÷7.89÷0.123
=1.23÷0.123×45.6÷4.56×0.789÷7.89
=10×10×0.1
=10
类似问题4:123*99+123 怎样简便计算[数学科目]
原式=123*(1+99)=123*100=12300
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类似问题5:123*(6.42/69.3)/(3.21/23.1)简便运算[数学科目]
123×(6.42÷69.3)÷(3.21÷23.1)————去括号
=123×6.42÷69.3÷3.21×23.1————变一变,就便便
=123×(6.42÷3.21)÷(69.3÷23.1)
=123÷3×2
=41×2
=82