Violympic toán 6
Các câu hỏi tương tự
1. Tìm x, biết:
a) \(\frac{2}{5}x-x=\frac{\left(-2018\right)^0}{5^2}\)
b) \(\left|-1\frac{1}{2}x+2x\right|-\frac{7}{4}=0,5\)
c) x + \(\left(x+\frac{2}{7}\right)+\frac{-5}{11}=\frac{4}{11}\)
d) |0,25x - 20o/o| \(+\frac{3}{8}=1\frac{3}{8}\)
left(20+9frac{1}{4}right):2frac{1}{4} left(6-2frac{4}{5}right).3frac{1}{8}-1frac{3}{5}:frac{1}{4}
frac{32}{15}:left(-1frac{1}{5}+1frac{1}{3}right) 0,2.frac{15}{36}-left(frac{2}{5}frac{2}{3}right):1frac{1}{5}
frac{-3}{7}.frac{5}{9}+frac{4}{9}.frac{-3}{7}+2frac{3}{7} 0,7.2frac{2}{3}.20.0,375.frac{5}{8}
Đọc tiếp
\(\left(20+9\frac{1}{4}\right):2\frac{1}{4}\) \(\left(6-2\frac{4}{5}\right).3\frac{1}{8}-1\frac{3}{5}:\frac{1}{4}\)
\(\frac{32}{15}:\left(-1\frac{1}{5}+1\frac{1}{3}\right)\) \(0,2.\frac{15}{36}-\left(\frac{2}{5}=\frac{2}{3}\right):1\frac{1}{5}\)
\(\frac{-3}{7}.\frac{5}{9}+\frac{4}{9}.\frac{-3}{7}+2\frac{3}{7}\) \(0,7.2\frac{2}{3}.20.0,375.\frac{5}{8}\)
a,1frac{13}{15}.0,75-left(frac{8}{15}+0,25right).frac{24}{47}
b,5:left(4frac{3}{4}-1frac{25}{28}right)-1frac{3}{8}:left(frac{3}{8}+frac{9}{20}right)
c,6frac{5}{12}:2frac{3}{4}+11frac{1}{4}.left(frac{1}{3}-frac{1}{5}right)
d,left(frac{3}{5}+0,415-frac{3}{200}right).2frac{2}{3}.0,25
e,left(frac{3}{8}+frac{-3}{4}+frac{7}{12}right):frac{5}{6}+frac{1}{2}
g,1frac{13}{15}.0,75-left(frac{11}{20}+25%right);frac{7}{3}
Đọc tiếp
\(a,1\frac{13}{15}.0,75-\left(\frac{8}{15}+0,25\right).\frac{24}{47}\)
\(b,5:\left(4\frac{3}{4}-1\frac{25}{28}\right)-1\frac{3}{8}:\left(\frac{3}{8}+\frac{9}{20}\right)\)
\(c,6\frac{5}{12}:2\frac{3}{4}+11\frac{1}{4}.\left(\frac{1}{3}-\frac{1}{5}\right)\)
\(d,\left(\frac{3}{5}+0,415-\frac{3}{200}\right).2\frac{2}{3}.0,25\)
\(e,\left(\frac{3}{8}+\frac{-3}{4}+\frac{7}{12}\right):\frac{5}{6}+\frac{1}{2}\)
\(g,1\frac{13}{15}.0,75-\left(\frac{11}{20}+25\%\right);\frac{7}{3}\)
1.thực hiện phép tính
a.frac{-1}{12}-left(2^5_8-frac{1}{3}right)
b.-1,75-left(frac{-1}{9}-2^1_{18}right)
c.frac{2}{5}+frac{-4}{3}+frac{-1}{2}
d.frac{3}{12}-left(frac{6}{15}-frac{3}{10}right)
e.left(8^5_{11}+3^5_8right)-3^5_{11}
f.frac{4}{9}:left(frac{-1}{7}right)+6^5_9:left(frac{-1}{7}right)
g.frac{-1}{4}.13^9_{11}-0,25.6^2_{11}
h.5^{27}_5+frac{27}{23}+0,5-frac{5}{27}+frac{16}{23}
i.frac{3}{8}.27^1_5-51^1_5.frac{3}{8}+19
Đọc tiếp
1.thực hiện phép tính
a.\(\frac{-1}{12}-\left(2^5_8-\frac{1}{3}\right)\)
b.-1,75-\(\left(\frac{-1}{9}-2^1_{18}\right)\)
c.\(\frac{2}{5}+\frac{-4}{3}+\frac{-1}{2}\)
d.\(\frac{3}{12}-\left(\frac{6}{15}-\frac{3}{10}\right)\)
e.\(\left(8^5_{11}+3^5_8\right)-3^5_{11}\)
f.\(\frac{4}{9}:\left(\frac{-1}{7}\right)+6^5_9:\left(\frac{-1}{7}\right)\)
g.\(\frac{-1}{4}.13^9_{11}-0,25.6^2_{11}\)
h.\(5^{27}_5+\frac{27}{23}+0,5-\frac{5}{27}+\frac{16}{23}\)
i.\(\frac{3}{8}.27^1_5-51^1_5.\frac{3}{8}+19\)
1 TÍNH
a,left(frac{-1}{4}right)^0
b,left(-2frac{1}{3}right)^2
c,left(frac{4}{5}right)^{-2}
d,left(0,5right)^{-3}
e,left(-1frac{1}{3}right)^4
f,27^3:3^2
g,left(frac{3}{5}right)^{15}:left(frac{9}{25}right)^5
h,5-left(-frac{5}{11}right)^0+left(frac{1}{3}right)^2:3
i,left(frac{1}{3}right)^{-3}+3.left(frac{1}{2}right)^0+left[left(-2right)^2:frac{1}{2}right].8
Đọc tiếp
1 TÍNH
\(a,\left(\frac{-1}{4}\right)^0\)
\(b,\left(-2\frac{1}{3}\right)^2\)
\(c,\left(\frac{4}{5}\right)^{-2}\)
\(d,\left(0,5\right)^{-3}\)
\(e,\left(-1\frac{1}{3}\right)^4\)
\(f,27^3:3^2\)
\(g,\left(\frac{3}{5}\right)^{15}:\left(\frac{9}{25}\right)^5\)
\(h,5-\left(-\frac{5}{11}\right)^0+\left(\frac{1}{3}\right)^2:3\)
\(i,\left(\frac{1}{3}\right)^{-3}+3.\left(\frac{1}{2}\right)^0+\left[\left(-2\right)^2:\frac{1}{2}\right].8\)
Bài 1 : Tính
1) frac{4}{7}-frac{1}{14}+left|frac{-5}{21}right|
2) left|frac{-2}{3}right|-frac{1}{2}+3
3) left|frac{7}{-4}right|-frac{5}{8}+frac{-2}{3}
4) frac{4}{5}+left|frac{-3}{2}right|+frac{1}{-4}
5) left|frac{-1}{4}right|-3+frac{3}{4}
6) left|frac{-1}{3}right|-frac{5}{4}+frac{1}{5}
Đọc tiếp
Bài 1 : Tính
1) \(\frac{4}{7}-\frac{1}{14}+\left|\frac{-5}{21}\right|\)
2) \(\left|\frac{-2}{3}\right|-\frac{1}{2}+3\)
3) \(\left|\frac{7}{-4}\right|-\frac{5}{8}+\frac{-2}{3}\)
4) \(\frac{4}{5}+\left|\frac{-3}{2}\right|+\frac{1}{-4}\)
5) \(\left|\frac{-1}{4}\right|-3+\frac{3}{4}\)
6) \(\left|\frac{-1}{3}\right|-\frac{5}{4}+\frac{1}{5}\)
Bài 1 : Tính
1) frac{4}{7}-frac{1}{14}+left|frac{-5}{21}right|
2) left|frac{-2}{3}right|-frac{1}{2}+3
3) left|frac{7}{-4}right|-frac{5}{8}+frac{-2}{3}
4) frac{4}{5}+left|frac{-3}{2}right|+frac{1}{-4}
5) left|frac{-1}{4}right|-3+frac{3}{4}
6) left|frac{-1}{3}right|-frac{5}{4}+frac{1}{5}
Bài 2 : Tìm x, biết :
1) x-left|1frac{1}{6}right|frac{5}{21}
2) x+left|-1frac{2}{3}right|left|-frac{3}{4}right|
3) left|x-frac{1}{3}right|frac{5}{2}
4) left|x+frac{2}{3}right|0
5) left|x+2right|frac{1...
Đọc tiếp
Bài 1 : Tính
1) \(\frac{4}{7}-\frac{1}{14}+\left|\frac{-5}{21}\right|\)
2) \(\left|\frac{-2}{3}\right|-\frac{1}{2}+3\)
3) \(\left|\frac{7}{-4}\right|-\frac{5}{8}+\frac{-2}{3}\)
4) \(\frac{4}{5}+\left|\frac{-3}{2}\right|+\frac{1}{-4}\)
5) \(\left|\frac{-1}{4}\right|-3+\frac{3}{4}\)
6) \(\left|\frac{-1}{3}\right|-\frac{5}{4}+\frac{1}{5}\)
Bài 2 : Tìm x, biết :
1) \(x-\left|1\frac{1}{6}\right|=\frac{5}{21}\)
2) \(x+\left|-1\frac{2}{3}\right|=\left|-\frac{3}{4}\right|\)
3) \(\left|x-\frac{1}{3}\right|=\frac{5}{2}\)
4) \(\left|x+\frac{2}{3}\right|=0\)
5) \(\left|x+2\right|=\frac{1}{3}-\frac{1}{5}\)
6) \(\left|x-4\right|=\frac{1}{5}-\left(\frac{1}{2}-\frac{5}{4}\right)\)
7) \(\left|x-\frac{5}{4}\right|=-\frac{1}{3}\)
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E cần gấp lắm ạ, cảm ơn.
Bài 1 : Tính
1) frac{4}{7}-frac{1}{14}+left|frac{-5}{21}right|
2) left|frac{-2}{3}right|-frac{1}{2}+3
3) left|frac{7}{-4}right|-frac{5}{8}+frac{-2}{3}
4) frac{4}{5}+left|frac{-3}{2}right|+frac{1}{-4}
5) left|frac{-1}{4}right|-3+frac{3}{4}
6) left|frac{-1}{3}right|-frac{5}{4}+frac{1}{5}
Bài 2 : Tìm x, biết :
1) x-left|1frac{1}{6}right|frac{5}{21}
2) x+left|-1frac{2}{3}right|left|-frac{3}{4}right|
3) left|x-frac{1}{3}right|frac{5}{2}
4) left|x+frac{2}{3}right|0
5) left|x+2right|frac{1...
Đọc tiếp
Bài 1 : Tính
1) \(\frac{4}{7}-\frac{1}{14}+\left|\frac{-5}{21}\right|\)
2) \(\left|\frac{-2}{3}\right|-\frac{1}{2}+3\)
3) \(\left|\frac{7}{-4}\right|-\frac{5}{8}+\frac{-2}{3}\)
4) \(\frac{4}{5}+\left|\frac{-3}{2}\right|+\frac{1}{-4}\)
5) \(\left|\frac{-1}{4}\right|-3+\frac{3}{4}\)
6) \(\left|\frac{-1}{3}\right|-\frac{5}{4}+\frac{1}{5}\)
Bài 2 : Tìm x, biết :
1) \(x-\left|1\frac{1}{6}\right|=\frac{5}{21}\)
2) \(x+\left|-1\frac{2}{3}\right|=\left|-\frac{3}{4}\right|\)
3) \(\left|x-\frac{1}{3}\right|=\frac{5}{2}\)
4) \(\left|x+\frac{2}{3}\right|=0\)
5) \(\left|x+2\right|=\frac{1}{3}-\frac{1}{5}\)
6) \(\left|x-4\right|=\frac{1}{5}-\left(\frac{1}{2}-\frac{5}{4}\right)\)
7) \(\left|x-\frac{5}{4}\right|=-\frac{1}{3}\)
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E đang cần gấp, cảm ơn :)
1.Thực hiện phép tính:
a) 45 : 2frac{4}{7}+50o/o - 1,25
b) 4frac{2}{5}.0,5-1frac{3}{7}.14o/o + (-0,8)
c) 1frac{3}{8}+frac{1}{8}:(75o/o - frac{1}{2}) - 25o/o . frac{1}{2}
d) 75o/o + 18 + 1,25 . frac{4}{5}-18frac{3}{4}
2.THPT:
A frac{9}{1.2}+frac{9}{2.3}+frac{9}{3.4}+...+frac{9}{98.99}+frac{9}{99.100}
B frac{2}{5.7}+frac{2}{7.9}+frac{2}{9.11}+...+frac{2}{93.95}
C left(1-frac{1000}{2017}right).left(1-frac{1001}{2017}right)...left(1-frac{2017}{2018}right)
D frac{5}{2.7}+frac{4}{7.11}+fr...
Đọc tiếp
1.Thực hiện phép tính:
a) 45 : \(2\frac{4}{7}+50\)o/o - 1,25
b) \(4\frac{2}{5}.0,5-1\frac{3}{7}.14\)o/o + (-0,8)
c) \(1\frac{3}{8}+\frac{1}{8}:\)(75o/o - \(\frac{1}{2}\)) - 25o/o . \(\frac{1}{2}\)
d) 75o/o + 18 + 1,25 . \(\frac{4}{5}-18\frac{3}{4}\)
2.THPT:
A = \(\frac{9}{1.2}+\frac{9}{2.3}+\frac{9}{3.4}+...+\frac{9}{98.99}+\frac{9}{99.100}\)
B = \(\frac{2}{5.7}+\frac{2}{7.9}+\frac{2}{9.11}+...+\frac{2}{93.95}\)
C = \(\left(1-\frac{1000}{2017}\right).\left(1-\frac{1001}{2017}\right)...\left(1-\frac{2017}{2018}\right)\)
D = \(\frac{5}{2.7}+\frac{4}{7.11}+\frac{3}{11.14}+\frac{1}{14.15}+\frac{13}{15.28}\)
3. Tìm x:
a)\(\left(2\frac{4}{5}x-50\right):\frac{2}{3}=51\)
b) \(3\frac{1}{3}x+16\frac{3}{4}=-13,25\)
c) \(\frac{2}{3}x-\frac{5}{6}x=\frac{11}{24}\)
d) x + \(\frac{2}{5}x=\frac{-14}{55}\)
e) \(\frac{2}{5}x-x=\frac{\left(-2018\right)^0}{5^2}\)
f) x + \(\left(x+\frac{2}{7}\right)+\frac{-5}{11}=\frac{4}{11}\)
Help me!!!!!!