\(\dfrac{-5}{21}+\dfrac{-2}{21}+\dfrac{1}{4}=\dfrac{-7}{21}+\dfrac{1}{4}=\dfrac{-1}{3}+\dfrac{1}{4}=\dfrac{-1}{12}\)
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\(\frac{13}{25}+\frac{6}{41}-\frac{38}{25}+\frac{35}{41}-\frac{1}{2}\)
\(1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\)
Tính giá trị biểu thức
1, \(\frac{1}{16}-\frac{5}{21}+\left(\frac{-1}{16}+\frac{-3}{5}-\frac{-5}{21}\right)+\frac{-2}{3}+\frac{3}{4}\)
2, \(\left(\frac{5}{8}-\frac{4}{13}+\frac{3}{2}\right)-\left(\frac{5}{8}+\frac{9}{13}\right)-\left|\frac{-3}{2}\right|+\frac{-7}{15}\)
a)\(-119\frac{3}{4}.\frac{3}{21}-\frac{13}{21}:4+\frac{6}{42}.116\frac{1}{2}\)
b)\(0,25.\left(-1199\frac{1}{2}\right)-\frac{1}{4}.\left(-2004\frac{1}{3}\right)-\frac{5}{4}\)
c)\(1\frac{3}{4}:\left(\frac{-1}{2}+\frac{2}{3}-\frac{5}{6}\right)-\left(-1,75\right)+25\%:2\)
Tính hợp lý:
1) Tính
a )\(3.\frac{5}{4}-\frac{3^2}{4}\)
b)\(\frac{-21}{10}+\frac{21}{10}-\frac{3}{4}-\frac{3}{4}\)
c)\(\frac{3}{4}+\frac{9}{5}-\frac{3}{2}-1\)
ai trả lời nhanh nhất mình sẽ kick đúng
\(\frac{2}{3}+\frac{4}{9}+\frac{2}{7}-\frac{7}{5}+\frac{1}{21}-\frac{2}{45}+4\frac{2015}{2016}\)
Tính bằng cách hợp lý nếu có :a,frac{15}{16}:left(frac{1}{2}-frac{2}{3}right)^2 b,frac{15}{34}+frac{7}{21}+frac{19}{34}-1frac{15}{17}+frac{2}{3} c,1frac{4}{23}+frac{5}{21}-frac{4}{23}+0,5+frac{16}{21} d,frac{3}{4}.26frac{2}{9}-38frac{2}{9}.frac{3}{4}
Đọc tiếp
Tính bằng cách hợp lý nếu có :
\(a,\frac{15}{16}:\left(\frac{1}{2}-\frac{2}{3}\right)^2\) \(b,\frac{15}{34}+\frac{7}{21}+\frac{19}{34}-1\frac{15}{17}+\frac{2}{3}\) \(c,1\frac{4}{23}+\frac{5}{21}-\frac{4}{23}+0,5+\frac{16}{21}\) \(d,\frac{3}{4}.26\frac{2}{9}-38\frac{2}{9}.\frac{3}{4}\)
Bài 2 : tínha) frac{5}{77}-frac{-4}{7}b) frac{4}{33}-frac{6}{-5}c) 1-frac{3}{4}d) frac{-7}{4}.frac{3}{5}e) frac{2}{-21}.frac{-7}{3}g) frac{-21}{15}.frac{-10}{14}h) frac{27}{28}-21 i)2-frac{2}{3}
Đọc tiếp
Bài 2 : tính
a) \(\frac{5}{77}-\frac{-4}{7}\)
b) \(\frac{4}{33}-\frac{6}{-5}\)
c) \(1-\frac{3}{4}\)
d) \(\frac{-7}{4}.\frac{3}{5}\)
e) \(\frac{2}{-21}.\frac{-7}{3}\)
g) \(\frac{-21}{15}.\frac{-10}{14}\)
h) \(\frac{27}{28}-21\)
i)\(2-\frac{2}{3}\)
\(\frac{6}{7}-\frac{5}{21}+\left(3\frac{1}{3}-4\frac{1}{14}\right)=x-\left(\frac{1}{2}-|-\frac{1}{3}|\right)\)
a) \(\frac{21}{47}+\frac{9}{45}+\frac{26}{45}+\frac{4}{5}\) ; b) \(\frac{15}{12}+\frac{5}{13}-\frac{3}{12}-\frac{18}{13}\)
c) \(\frac{27}{23}+\frac{5}{21}-\frac{4}{23}+\frac{6}{21}+\frac{1}{2}\) ; d) \(\frac{13}{25}+\frac{6}{41}-\frac{38}{25}+\frac{35}{41}-\frac{1}{2}\)
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