脱式计算(能简便的简便) 2012×2010/2011 3.64÷4+4.36×0.25 (5/8+2/27)×8+11/27 41×9.9+4.1解方程10×7-5x=9.2﹝写出检验过程﹞脱式计算(能简便的简便)2012×2010/20113.64÷4+4.36×0.25(5/8+2/27)×8+11/27 41×9.9+4.1
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脱式计算(能简便的简便) 2012×2010/2011 3.64÷4+4.36×0.25 (5/8+2/27)×8+11/27 41×9.9+4.1解方程10×7-5x=9.2﹝写出检验过程﹞脱式计算(能简便的简便)2012×2010/20113.64÷4+4.36×0.25(5/8+2/27)×8+11/27 41×9.9+4.1
脱式计算(能简便的简便) 2012×2010/2011 3.64÷4+4.36×0.25 (5/8+2/27)×8+11/27 41×9.9+4.1
解方程
10×7-5x=9.2﹝写出检验过程﹞
脱式计算(能简便的简便)
2012×2010/2011
3.64÷4+4.36×0.25
(5/8+2/27)×8+11/27
41×9.9+4.1
脱式计算(能简便的简便) 2012×2010/2011 3.64÷4+4.36×0.25 (5/8+2/27)×8+11/27 41×9.9+4.1解方程10×7-5x=9.2﹝写出检验过程﹞脱式计算(能简便的简便)2012×2010/20113.64÷4+4.36×0.25(5/8+2/27)×8+11/27 41×9.9+4.1
脱式计算(能简便的简便)
2012×2010/2011
=(2011+1)(2011-1)/2011
=(2011²-1)/2011
=2011-1/2011
=2010又2011分之2010;
3.64÷4+4.36×0.25
=(3.64+4.36)×0.25
=8×0.25
=2;
(5/8+2/27)×8+11/27
=5+16/27+ 11/27
=5+(16/27+11/27)
=5+1
=6;
41×9.9+4.1
=4.1×(99+1)
=4.1×100
=410;
解方程
10×7-5x=9.2﹝写出检验过程﹞
5x=70-9.2;
5x=60.8;
x=12.16;
10×7-5×12.16=70-60.8=9.2;
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解方程:
10×7-5x=9.2
5x=70-9.2;
5x=60.8;
x=12.16;
脱式计算:
2012×2010/2011
=(2011+1)(2011-1)/2011
=(2011²-1)/2011
=2011-1/2011
=2010又2011分之2010;
3.64÷4+...
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解方程:
10×7-5x=9.2
5x=70-9.2;
5x=60.8;
x=12.16;
脱式计算:
2012×2010/2011
=(2011+1)(2011-1)/2011
=(2011²-1)/2011
=2011-1/2011
=2010又2011分之2010;
3.64÷4+4.36×0.25
=(3.64+4.36)×0.25
=8×0.25
=2;
(5/8+2/27)×8+11/27
=5+16/27+ 11/27
=5+(16/27+11/27)
=5+1
=6;
41×9.9+4.1
=4.1×(99+1)
=4.1×100
=410;
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