目录史上最难六年级附加题 六年级下册数学变态难题 解比例数学题100道带答案 7道难倒博士小学数学题 六年级100道数学题
1、25%2、44% 3、三年级160人,四年级200人,五年级180人,六带颂年级198人,共738
4、4*0.01=0.040.04/0.02=2 还剩2吨5、0.9*0.8=0.72 72%6、0.8*1.2=0.96
7、20/2.5=810-8=2 给2张8、题目写错了,{是甲余下蠢巧郑的钱数比总数的25%少3元}
9、0.65*0.8*0.25=0.1315.6/0.13=12010、200*0.08=1616/0.05=320
11、120/150=80%12、6475 13、1350/(0.2+0.25)宽伍=3000
1.设甲每天做x,乙每天做y,所以可以列一稿物等式,20x=25y,推出x=5/4y,所以甲的工作效率比乙的工作效率高(5/4y-y)÷y=25%
2.设乙的年龄吵敬族为y,则甲的年龄为y*(1+20%),丙升弊的年龄为y*(1-20%),所以甲的年龄比乙的年龄大[y*(1+20%)-y*(1-20%)]÷y=40%
3.
1、解:设鸡有X只,那么袭漏兔子有(80-X)只
2X-4(80-X)=4
2X-320+4X=4
6X=4+320
X=324/6
X=54
因此,兔拍销烂斗模子有:80-54=26只
2、解:设鸡有X只,那么兔子有6X只
2X+4*6X=390
26X=390
X=15
因此,兔子有:15*6=90只
3、解:设甲乙两人共中X发
8X-(20-X)*3=116
8X-60+3X=116
11X=116+60
X=16
乙得:(116-22)/2=47分
甲得:47+22=69分
口算1.10-5.4=
2.4÷20=
3.5×200=
4.1.5-0.06=
5.0.75÷15=
6.0.4×0.8=薯漏茄
7.4×0.25=
8.0.36+1.54=
9.1.01×99=
10.420÷35=
11.25×12=
12.135÷0.5=
13.3/4 + 1/4 =
14.2 + 4/9 =
15.3 - 2/3 =
16.3/搜腊4 - 1/2=
17.1/6 + 1/2 -1/6 =
18.7.5-(2.5+3.8)=
19.7/8 + 3/8 =
20.3/10 +1/5 =
21.4/5 - 7/10 =
22.2 - 1/6 -1/3 =
23.0.51÷17=
24.32.8+19=
25.5.2÷1.3=
26.1.6×0.4=
简便计算
1. 1-2+3-4+5-6+7-8+9-10+11-12+................+2003-2004+2005-2006+2007
480+325+75
295-128-72
43×25×4
102×43
66×38-987÷21 66×38-987÷21
1.25*17.6+36.1/0.8+2.36*12.5
7.5*2.3+1.9*2.5
5*2.3+1.9*2.5
2004/2003*2005
276*543-267/276+543*275
2002+2001-2000-1999+1998+1997-1996-995+……+2+1
1/3+1/15++1/35+1/63+九十1/9
1/7 - 1/9 + 1/9 - 1/11)
0.49÷1.4 1.25×2.5×32 3.6-0.6×2
3.65×10.1 3.6-3.6×0.8 15.2÷0.25÷4
5.6÷3.5 9.6÷0.8÷0.4 4.2×99+4.2
0.89×100.1 146.5-(23+46.5) 17.8÷(1.78×4)
5.83×2+4.27 (45.9-32.7)÷8÷0.125 9.7×99+9.7
36×12.5×8 15.6×13.1-15.6-15.6×2.1 0.65×101
27.5×3.7-7.5×3.7 8.54÷2.5÷0.4 3.83×4.56+3.83×5.44
9.9×0.625×101-62.5
9.9×8.6+0.86
0. 46×7.5+0. 46×2. 5
6×8.04+6.4×8.04-8.04
5.4×0.15÷0.2+4.6×0.15
55×10.43+104.3×4.4+104.3×0.1
方程
5/17-x=1/5
5/9+x=23
6x-x=0.5
x-4/数察9=2/3
4x+20=3.9
4x+12=50
17+8.3 4x=50-12
4x=38
2.3x-1.02=0.36
24 x=0.6
X-5.7=2.15
15 5X-2X=18
3X+0.7=5
3.5×2= 4.2+x
26×1.5= 2x+10
0.5×16―16×0.2=4x
13 9.25-X=0.403
9÷X=0. 3
X÷0.5=2.6
x+13=33 .3 - 5x=80
1.8 +6x=54
6.7x -60.3=6.7
9 +4x =40
0.2x-0.4+0.5=3.7
9.4x-0.4x=16.2
(1)2.64×1.7-2.64×0.7
=2.64×(1.7-0.7)
=2.64×1
=2.64
(2)31.5×1.07-3.15×0.7
=3.15×10.7-3.15×0.7
=3.15×(型庆凯10.7-0.7)
=3.15×10
=31.5
(3)2.7×5.7-2.7+5.3×2.7
=2.7×(5.7-1+5.3)
=2.7×10
=27
(4)0.625÷0.125×0.8
=(0.625×0.8)×8÷(0.128×8)
=0.5×8÷1
=4
(5)18.6×6.1+3.9×18.6
=18.6×(6.1+3.9)卜唤
=18.6×10
=186
(6)1.3579+3.5791+5.7913+7.9135+9.1357
=(1+3+5+7+9)×1.1111
=25×1.1111
=27.7775
(7)52.5x2.9+5.45
=5.25x29+5.25+0.2
=5.25×(差扒29+1)+0.2
=5.25×30+0.2
=157.5+0.3
=157.7
(8)0.92x15+0.08x15
=(0.92+0.08)×15
=1×15
=15
(9)0.72×1.25×2.5
=0.9×(0.8×1.25)×2.5
=0.9×1×2.5
=2.25
(10)400.6x7-2003x0.4
=200.3x14-200.3x4
=200.3×(14-4)
=200.3×10
=2003