六年级数学题目 简便计算 急急急

kuaidi.ping-jia.net  作者:佚名   更新日期:2024-08-01
六年级数学计算题

13.9×137/138+137×139/138
=(13.9+139)×137/138
=139×1.1×137/138
=

简便运算:
243+199=443+200-1=442

准确填空:
(1)3.25*4表示( 4个3.25相加 )
(2)一个数除以9,商7余6,这个数是( 69 )
(3)在括号里填上适当的数,使算式能用简便方式计算。
4.9*9+( 0.9) (12.5+1.25)*(8 )

(5)规定A△B=A*(B+5)是一种运算规则,例如7△3=7*(3+5)=40。那么8△2=( 8*(2+5)=56 )

开放题
(1)你能想出多少种方法计算25*32的结果?
5*5*2*2*2*8
=……

(2)给你四个自然数3,5,4,7,通过四则计算(可以交换数的位置,也已随意添加运算符号,但每一个数只能用一次),写一个综合算式,使结果等于24。
(2)4*5+7-3

1、4.6*1.25+1又4分之1*4.3-0.9*125%-1
=4.6*5/4+5/4*4.3-0.9*5/4-1
=5/4(4.6+4.3-0.9-1)
=5/4(8.9-1/9)
=5/4*7
=35/4
2、8.72*45.8÷8.72*8.72÷45.8÷8.72
=45.8/45.8
=1
3、3分之1*8.4+1.6*8分之1
=1/3*8.4+1.6*1/8
=2.8+0.2
=3
4、(6分之1+3分之1+0.5)*12
=(1/6+1/3+1/2)*12
=(1+2*3)/6*12
=12
5、5-【1又3分之1-(2.5-1又3分之2)】÷0.125
=5-[4/3-(2.5-5/3)]/1/8
=5-[4/3-5/6]1/8
=5-1/2*1/8
=5-1/16
=4又15/16
6、7分之5*7÷7分之5*7+1.01*99
=5/7*7/5/7*7+1.01*(100-1)
=5/5+101-1.01
=100.99
7、4分之1+0.25*41.5+20又2分之1*4分之1
=1/4+0.25*41.5+41/2*1/4
=1/4(1+41.5+20.5)
=1/4*63
=63/4
8.40.2*8.1*5分之4÷5分之4÷(0.8*81*20.1)
=40.2*8.1/(0.8*8.1*20.1)
=2/0.8
=2.5
9.7.24*5分之3+0.6*2.41-0.65*60%
=7.24*3/5+0.6*2.41-0.65*0.6
=0.6(7.24+2.41-0.65)
=0.6*9
=5.4
11、5.6÷【10÷(6又10分之1-1.8*3又3分之1)】÷40%
=5.6/[10/(61/10-6]/0.4
=5.6/100/0.4
=5.6/40
=7/50

1、4.6*1.25+1又4分之1*4.3-0.9*125%-1=1.25(4.6+4.3-0.9)-1=1.25*8-1=10-1=9

2、8.72*45.8÷8.72*8.72÷45.8÷8.72=(8.72÷8.72)*45.8*8.72÷45.8÷8.72=(45.8÷45.8)*(8.72÷8.72)=1

3、3分之1*8.4+1.6*8分之1=84/30+16/80=14/5+1/5=15/5=3

4、(6分之1+3分之1+0.5)*12=1/6*6+1/3*6+0.5*6=1+2+3=6

5、5-【1又3分之1-(2.5-1又3分之2)】÷0.125=5-(1又3分之1+1又3分之2-2.5)*8=5-(3-2.5)*8=5-4=1

6、7分之5*7÷7分之5*7+1.01*99=(7分之5*7)÷(7分之5*7)+1.01*99=1+99.99=100.99

7、4分之1+0.25*41.5+20又2分之1*4分之1=0.25*1+0.25*41.5+20.5*0.25=0.25(1+41.5+20.5)=0.25*63=15.75

8.40.2*8.1*5分之4÷5分之4÷(0.8*81*20.1)=20.1*2*81*0.1*0.8*5/4÷(0.8*81*20.1)=(0.8*81*20.1)*2*0.1*01.25÷(0.8*81*20.1)=0.25

9.7.24*5分之3+0.6*2.41-0.65*60%=7.24*0.6+2.41*0.6-0.65*0.6=0.6*(7.24+2.41-0.65)=0.6*9=5.4

1、4.6*1.25+1又4分之1*4.3-0.9*125%-1
=4.6*5/4+5/4*4.3-0.9*5/4-1
=5/4(4.6+4.3-0.9-1)
=5/4(8.9-1/9)
=5/4*7
=35/4
2、8.72*45.8÷8.72*8.72÷45.8÷8.72
=45.8/45.8
=1
3、3分之1*8.4+1.6*8分之1
=1/3*8.4+1.6*1/8
=2.8+0.2
=3
4、(6分之1+3分之1+0.5)*12
=(1/6+1/3+1/2)*12
=(1+2*3)/6*12
=12
5、5-【1又3分之1-(2.5-1又3分之2)】÷0.125
=5-[4/3-(2.5-5/3)]/1/8
=5-[4/3-5/6]1/8
=5-1/2*1/8
=5-1/16
=4又15/16
6、7分之5*7÷7分之5*7+1.01*99
=5/7*7/5/7*7+1.01*(100-1)
=5/5+101-1.01
=100.99
7、4分之1+0.25*41.5+20又2分之1*4分之1
=1/4+0.25*41.5+41/2*1/4
=1/4(1+41.5+20.5)
=1/4*63
=63/4
8.40.2*8.1*5分之4÷5分之4÷(0.8*81*20.1)
=40.2*8.1/(0.8*8.1*20.1)
=2/0.8
=2.5
9.7.24*5分之3+0.6*2.41-0.65*60%
=7.24*3/5+0.6*2.41-0.65*0.6
=0.6(7.24+2.41-0.65)
=0.6*9
=5.4
11、5.6÷【10÷(6又10分之1-1.8*3又3分之1)】÷40%
=5.6/[10/(61/10-6]/0.4
=5.6/100/0.4
=5.6/40
=7/50

太乱了99999*77778+33333*66666
=99999*77778+33333*3*22222
=99999*77778+99999*22222
=99999*(22222+77778)
=9999900000
我做过这道题,你抄差了

很简单啊!!!!