六年级数学计算?1、把80除以5按照竖式计算格式写好。2、从高位除起,十位上:8÷5=1···3,即竖式除号的十位上,写上得数1,余数3与个位的0合成30,并入个位的除法计算。3、个位上:30÷5=6,即个位得数写6,没有余数,可以整除。即:80÷5=16。验证:16×5=80,与 80÷5=16 相符,即计算正确无误。那么,六年级数学计算?一起来了解一下吧。
一: 10.65+9.35-(7.17+2.83)
=20-10
=10
二:4.48÷0.8÷(4.3-3.6)
=5.6÷0.7
=8
三;7/12÷(3/4X7/12)
=7/12X4/3X12/7
=4/3
四;7/9X3/11+2/9X3/11
=(7/9+2/9)X3/11
=3/11
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
六年级上册数学脱式计算及答案大全
六年级上册数学中,脱式计算是一个重要的知识点。脱式计算主要是指将含有未知数的式子中的未知数都计算出来,得到最终的结果。下面是六年级上册数学脱式计算及答案大全:
1. 5x + 3 = 23
解:5x = 23 - 3 = 20
x = 20 ÷ 5 = 4
2. 8y - 11 = 37
解:8y = 37 + 11 = 48
y = 48 ÷ 8 = 6
3. 4a + 7 = 27
解:4a = 27 - 7 = 20
a = 20 ÷ 4 = 5
4. 2b - 9 = 13
解:2b = 13 + 9 = 22
b = 22 ÷ 2 = 11
5. 6c + 2 = 32
解:6c = 32 - 2 = 30
c = 30 ÷ 6 = 5
6. 3d - 5 = 16
解:3d = 16 + 5 = 21
d = 21 ÷ 3 = 7
7. 9e + 4 = 49
解:9e = 49 - 4 = 45
e = 45 ÷ 9 = 5
8. 10f - 3 = 17
解:10f = 17 + 3 = 20
f = 20 ÷ 10 = 2
9. 7g + 8 = 29
解:7g = 29 - 8 = 21
g = 21 ÷ 7 = 3
10. 12h - 7 = 41
解:12h = 41 + 7 = 48
h = 48 ÷ 12 = 4
以上是六年级上册数学脱式计算及答案大全,希望能对同学们的数学学习有所帮助。
第一题:
10.65-7.17-2.83+9.35
= 10.65-10+9.35
= 0.65+9.35
= 10
第二题:
4.48÷{(4.3-3.6)×0.8}
= 4.48 ÷ (0.7×0.8)
= 4.48 ÷ 0.56
= 8
第三题:
7/12÷{3/4×(1/3+1/4)
= 7/12÷(3/4×7/12)
= 4/3
第四题:
7/9×3/11+2/9÷11/3
= 7/33 + 2/297
= 63/297 + 2/297
= 65/297
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
以上就是六年级数学计算的全部内容,六年级数学简便运算技巧众多,其中提取公因式是最基础的方法之一。提取公因式实际上利用了乘法分配律,即将相同因数提取出来,剩下的项相加减,往往能够出现一个整数,需要特别注意相同因数的提取。借来借去法是一种巧妙的运算技巧,适用于看到类似998、999或1.98这样的数字时。通过借来借去,可以简化计算。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。