跪求几道小学数学题的答案~简便解.要有过程,递等式、、在线等!
有详细讲解。。讲到我彻底明白的有加分啊~~~~太马大哈了。题目都忘记打了1.1909+3264/16-24*52.13.25/[(548+452)*(8-7.48)]3....
有详细讲解。。讲到我彻底明白的有加分啊~~~~
太马大哈了。题目都忘记打了
1.1909+3264/16-24*5
2.13.25/[(548+452)*(8-7.48)]
3.(4.05-2.83-0.17)*2又17分之2*17
4.15*1.5/(150/15) 展开
太马大哈了。题目都忘记打了
1.1909+3264/16-24*5
2.13.25/[(548+452)*(8-7.48)]
3.(4.05-2.83-0.17)*2又17分之2*17
4.15*1.5/(150/15) 展开
4个回答
展开全部
一
2006-2003+2002-1999+1996-1993......16-13+10-7+4
=(2008-2005)+(2002-1999)+(1996-1993)+......+(16-13)
+(10-7)+4
=3*[(2008-10)\6+1]+4
=3*334+4
=1006
二
50+49-48-47+46+45-44-43+......+8+7-6-5+4+3-2-1
=(50-48)+(49-47)+......(8-6)+(7-5)+(4-2)+(3-1)
=2*[(50-3)\1+1]
=2*48
=96
三
98989898*99999999\1010101\11111111
=(98989898/10101010*10)*(99999999/11111111)
=9.8*10*9
=98*9
=100*9-2*9
=900-18
=882
几个难题。呵呵O(∩_∩)O~,多做难题有益!
还有些基础的,答案就免啦~(只有前5题有答案)
1125-997 998+1246+9989 (8700+870+87)÷87
125×8.8 1.3+4.25+3.7+3.75 17.15-(3.5-2.85)
3.4×99+3.4 4.8×1.01 0.4×(2.5÷73)
(1.6+1.6+1.6+1.6)×25 ( + - )÷
12.3-2.45-5.7-4.55 2 + 0.125×0.25×64
64.2×87+0.642×1300 78×36+7.8×741-7 17+ 8
0.125× +0.5 2.42 +4.58 -43
25÷100 4.25-3 -(2 -1 )
(1)1.25*17.6+36.1/0.8+2.36*12.5
1.25*17.6+36.1/0.8+2.36*12.5
=(5/4)*17.6+36.1*(5/4)+23.6*(50/4)
=176/8+361/8+236/8
=773/8=96.625
(2)7.5*2.3+1.9*2.5
7.5*2.3+1.9*2.5
=7.5*(1.9+0.4)+1.9*2.5
=(7.5+2.5)*1.9+7.5*0.4
=19+3 =22
(3)2004/2003*2005
2004/2003*2005
=(2004/2003)*(2003+2)
=2004+4008/2003
(4)276*543-267/276+543*275
276*543-267/276+543*275
=543*(276+275)-267/276
=543*551-267/276
(5)17/51+ (68/1+51/2)*17
17/51+ (68/1+51/2)*17
后面的自己做吧~!
2006-2003+2002-1999+1996-1993......16-13+10-7+4
=(2008-2005)+(2002-1999)+(1996-1993)+......+(16-13)
+(10-7)+4
=3*[(2008-10)\6+1]+4
=3*334+4
=1006
二
50+49-48-47+46+45-44-43+......+8+7-6-5+4+3-2-1
=(50-48)+(49-47)+......(8-6)+(7-5)+(4-2)+(3-1)
=2*[(50-3)\1+1]
=2*48
=96
三
98989898*99999999\1010101\11111111
=(98989898/10101010*10)*(99999999/11111111)
=9.8*10*9
=98*9
=100*9-2*9
=900-18
=882
几个难题。呵呵O(∩_∩)O~,多做难题有益!
还有些基础的,答案就免啦~(只有前5题有答案)
1125-997 998+1246+9989 (8700+870+87)÷87
125×8.8 1.3+4.25+3.7+3.75 17.15-(3.5-2.85)
3.4×99+3.4 4.8×1.01 0.4×(2.5÷73)
(1.6+1.6+1.6+1.6)×25 ( + - )÷
12.3-2.45-5.7-4.55 2 + 0.125×0.25×64
64.2×87+0.642×1300 78×36+7.8×741-7 17+ 8
0.125× +0.5 2.42 +4.58 -43
25÷100 4.25-3 -(2 -1 )
(1)1.25*17.6+36.1/0.8+2.36*12.5
1.25*17.6+36.1/0.8+2.36*12.5
=(5/4)*17.6+36.1*(5/4)+23.6*(50/4)
=176/8+361/8+236/8
=773/8=96.625
(2)7.5*2.3+1.9*2.5
7.5*2.3+1.9*2.5
=7.5*(1.9+0.4)+1.9*2.5
=(7.5+2.5)*1.9+7.5*0.4
=19+3 =22
(3)2004/2003*2005
2004/2003*2005
=(2004/2003)*(2003+2)
=2004+4008/2003
(4)276*543-267/276+543*275
276*543-267/276+543*275
=543*(276+275)-267/276
=543*551-267/276
(5)17/51+ (68/1+51/2)*17
17/51+ (68/1+51/2)*17
后面的自己做吧~!
展开全部
1909+3264/16-24*5
=1909+204-120
=1909+84
=1909+1+83
=1910+83
=1993(有点复杂)
=1909+204-120
=1909+84
=1909+1+83
=1910+83
=1993(有点复杂)
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题目题目那。。。
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