六年级上册数学简便计算题?以下是20道六年级上册数学的简算题目,每道题都尽量做到了简便计算:9992 答案:利用平方差公式,2 = 10002 2×1000 + 1 = 998001。25×32×125 答案:将32拆分为4×8,然后利用乘法结合律,25×4×8×125 = 100×1000 = 100000。99×78+78 答案:利用乘法分配律,那么,六年级上册数学简便计算题?一起来了解一下吧。
六年级数学简便计算有代表性的题目:
(一) 分数乘法及乘法分配律的应用
10/17×1/4+10/17×3/4
=10/17×(1/4+3/4)
=10/17×1
=10/17
(二)分数乘除法混合运算及乘法分配律的应用
7/8÷7/4+7/8×3/7
=7/8×4/7+7/8×3/7
=7/8×(4/7+3/7)
=7/8×1
=7/8
以下是一些六年级的简便脱式计算题,供你参考:
3.6×5.2+3.6×4.8;2.5×3.6+12.5×6.4;0.75×1.25+0.25×1.25;4.8÷2+8÷8;9.6÷3-9.6÷18;4.5×10+4.5×1;5.6×100÷5.6;8.4×100÷42×102;3.6×100+3×1;56×56×2;36×4-36×2;72÷6-72÷12
14.4÷2+14.4÷8;16×100÷16×101;25×4+25×2;12.5×3.6+12.5×6.4;6.4×100÷8;8×100+8×1;3.6×100-3.6×1;54÷9-54÷7;21-40
请自行编写类似的计算题,运用乘法、除法和加减法的简便计算方法。
4.8×100÷4;12.5×6.4-12.5×3.6;25×4-25×2;3.6×100+3.6×1;96÷16-96÷4;10×100+10×1;5×100÷5+88;.2×100÷36+76;4.8×100÷2;3×100+3×1;51-70.
请自行编写类似的计算题,运用乘法、除法和加减法的简便计算方法。
一定要把括号外的数分别乘括号里的两个数,再把积相加或相减。
(8+40)×25 125×(8+80) 48×(5+100) 24×(2+10) 75×(1000—2) 15×(40— 8)
例如:
(1)2.64×51.9+264×0.481
=264×0.519+264×0.481
=264×(0.519+0.481)
=264×1
=264
(2)9.16×1.53-0.053×91.6
=9.16×1.53-0.53×9.16
=9.16×(1.53-0.53)
=9.16×1
=9.16
小学数学简便方法归纳
1、提取公因式:这个方法实际上是运用了乘法分配律,将相同因数提取出来,考试中往往剩下的项相加减,会出现一个整数。
2、借来借去法:看到名字,就知道这个方法的含义。用此方法时,需要注意观察,发现规律。
3、拆分法:拆分法就是为了方便计算把一个数拆成几个数。
62×7.1+2.9,
=440.2+2.9,
=443.1;
4.2×0.25,
=(4+0.2)×0.25,
=4×0.25+0.2×0.25,
=1+0.05,
=1.05;
5.2×4.3+0.8×4.3,
=(5.2+0.8)×4.3,
=6×4.3,
=25.8.
8.5+1.5÷0.25×4,
=8.5+6×4,
=8.5+24,
=32.5.
0.25×0.8+2.5%
=0.2+2.5%,
=0.225;
32×125×2.5,
=4×8×125×2.5,
=8×125×(4×2.5),
=1000×10,
=10000;
94÷(6.84×8.5-31.46÷0.55),
=94÷(58.14-57.2),
=94÷0.94,
=100.
13÷0.4÷2.5,
=13÷(0.4×2.5),
=13÷1,
=13;
1.25×2.5×0.8,
=(1.25×0.8)×2.5,
=1×2.5,
=2.5;
1.5×101-1.5,
=1.5×(101-1),
=1.5×100,
=150;
4.8×101,
=4.8×100+4.8×1,
=480+4.8,
=484.8.
3.25×4.7-7.8,
=15.275-7.8,
=7.475;
0.57+0.43×0.24,
=0.57+0.1032,
=0.6732.
945÷5÷3,
=189÷3,
=63;
152×3÷2,
=456÷2,
=228;
43×12×6,
=516×6,
=3096.
200+25×33,
=200+825,
=1025;
(25+26)×48,
=51×48,
=2448.
576-(290+107),
=576-397,
=179;
649+124-556,
=773-556,
=217.
4.82-5.2÷0.8×0.6,
=4.82-6.5×0.6,
=4.82-3.9,
=0.92.
我这儿有哦,这么多,不知道你够不够
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
以上就是六年级上册数学简便计算题的全部内容,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)=13、3分之1*8.4+1.6*8分之1=84/30+16/80=14/5+1/5=15/5=34、(6分之1+3分之1+0.5)*12=1/6*6+1/3*6+0.5*6=1+2+3=65、内容来源于互联网,信息真伪需自行辨别。如有侵权请联系删除。