数学两题
下面能简便的要简便计算46.8*0.37+4.68*6.30.86-(33/4-2.75*0.75/0.25)...
下面能简便的要简便计算
46.8*0.37+4.68*6.3
0.86-(33/4-2.75*0.75/0.25) 展开
46.8*0.37+4.68*6.3
0.86-(33/4-2.75*0.75/0.25) 展开
3个回答
2008-03-16 · 知道合伙人教育行家
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46.8*0.37+4.68*6.3
=4.68*3.7+4.68*6.3
=4.68*(3.7+6.3)
=4.68*10
=46.8
0.86-(33/4-2.75*0.75/0.25)
=0.86-(8.25-2.75*3)
=0.86-(8.25-8.25)
=0.86
=4.68*3.7+4.68*6.3
=4.68*(3.7+6.3)
=4.68*10
=46.8
0.86-(33/4-2.75*0.75/0.25)
=0.86-(8.25-2.75*3)
=0.86-(8.25-8.25)
=0.86
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46.8*0.37+4.68*6.3=4.68*0.37*0.1+4.68*0.63*0.1=4.68*0.1*(0.37+0.63)=4.68*0.1*1=0.468
0.86-(33/4-2.75*0.75/0.25)=0.86-(33/4-11/4*3/4/1/4)=0.86-(33/4-33/4)=0.86-0=0.86
0.86-(33/4-2.75*0.75/0.25)=0.86-(33/4-11/4*3/4/1/4)=0.86-(33/4-33/4)=0.86-0=0.86
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(1) 原式=(46.8/10)*(0.37*10)+4.68*6.3
=4.68*3.7+4.68*6.3
=4.68*(3.7+6.3)
=4.68*10 =46.8
(2) 原式=0.86-(8.25-2.75*3)
=0.86-(8.25-8.25)
=0.86
=4.68*3.7+4.68*6.3
=4.68*(3.7+6.3)
=4.68*10 =46.8
(2) 原式=0.86-(8.25-2.75*3)
=0.86-(8.25-8.25)
=0.86
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