Các câu hỏi tương tự
Tính nhanh:
a,\(\frac{7}{13}\cdot\frac{7}{15}-\frac{5}{12}\cdot\frac{21}{39}+\frac{49}{91}\cdot\frac{8}{15}\)
b,\(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right)\cdot\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
1. Tính nhanh
a, \(\frac{7}{13}.\frac{7}{15}-\frac{5}{12}.\frac{21}{39}+\frac{49}{91}.\frac{8}{15}\)
b, \(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
c,\(\frac{5}{2.1}+\frac{4}{1.11}+\frac{3}{11.2}+\frac{1}{2.15}+\frac{13}{15.4}\)
1.Tính:
\(a.\frac{7}{13}.\frac{7}{15}-\frac{5}{12}.\frac{21}{39}+\frac{49}{91}.\frac{8}{15}\)
\(b.\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right).\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
2.So sánh
\(a.3^{200}và2^{300}\)
\(b.71^{50}và37^{75}\)
1. Tính nhanh:a.frac{17}{13}timesfrac{7}{15}-frac{5}{12}timesfrac{21}{39}+frac{49}{91}timesfrac{8}{15}b.left(frac{12}{199}+frac{23}{200}-frac{34}{201}right)timesleft(frac{1}{2}-frac{1}{3}-frac{1}{6}right)2. So sánh:a. 3200và2300b. 7150và3775c.frac{201201}{202202}vàfrac{201201201}{202202202}
Đọc tiếp
1. Tính nhanh:
a.\(\frac{17}{13}\times\frac{7}{15}-\frac{5}{12}\times\frac{21}{39}+\frac{49}{91}\times\frac{8}{15}\)
b.\(\left(\frac{12}{199}+\frac{23}{200}-\frac{34}{201}\right)\times\left(\frac{1}{2}-\frac{1}{3}-\frac{1}{6}\right)\)
2. So sánh:
a. 3200và2300
b. 7150và3775
c.\(\frac{201201}{202202}\)và\(\frac{201201201}{202202202}\)
1, Tính nhanh :a , frac{7}{13} . frac{7}{15}- frac{5}{12} . frac{21}{39}+ frac{49}{91}. frac{8}{15}b ,( frac{12}{199}+ frac{23}{200}- frac{34}{201}) . (frac{1}{2}-frac{1}{3}- frac{1}{6})
Đọc tiếp
1, Tính nhanh :
a , \(\frac{7}{13}\) . \(\frac{7}{15}\)- \(\frac{5}{12}\) . \(\frac{21}{39}\)+ \(\frac{49}{91}\). \(\frac{8}{15}\)
b ,( \(\frac{12}{199}\)+ \(\frac{23}{200}\)- \(\frac{34}{201}\)) . (\(\frac{1}{2}\)-\(\frac{1}{3}\)- \(\frac{1}{6}\))
Tính nhanh:a) frac{7}{13}. frac{7}{15}- frac{5}{12}. frac{21}{39}+ frac{49}{91}. frac{8}{15}b) ( frac{12}{199}+ frac{23}{200}- frac{34}{201} ) . ( frac{1}{2}- frac{1}{3}- frac{1}{6})
Đọc tiếp
Tính nhanh:
a) \(\frac{7}{13}\). \(\frac{7}{15}\)- \(\frac{5}{12}\). \(\frac{21}{39}\)+ \(\frac{49}{91}\). \(\frac{8}{15}\)
b) ( \(\frac{12}{199}\)+ \(\frac{23}{200}\)- \(\frac{34}{201}\) ) . ( \(\frac{1}{2}\)- \(\frac{1}{3}\)- \(\frac{1}{6}\))
1.thực hiện phép tínha,frac{18}{24}:frac{5}{2}+frac{7}{-10} (frac{12}{199}-frac{23}{200}+frac{34}{201}).(frac{1}{2}-frac{1}{3}-frac{1}{6})2.tìm xa, x+515 b,x-frac{5}{3}frac{1}{9}c,frac{x}{15}-frac{-2}{3}+frac{3}{5} d,frac{x}{9} frac{7}{x} frac{x}{6}(xin z)
Đọc tiếp
1.thực hiện phép tính
a,\(\frac{18}{24}:\frac{5}{2}+\frac{7}{-10}\) \((\frac{12}{199}-\frac{23}{200}+\frac{34}{201}).(\frac{1}{2}-\frac{1}{3}-\frac{1}{6})\)
2.tìm x
a, x+5=15 b,\(x-\frac{5}{3}=\frac{1}{9}\)
\(c,\frac{x}{15}-\frac{-2}{3}+\frac{3}{5}\) \(d,\frac{x}{9}< \frac{7}{x}< \frac{x}{6}(x\in z)\)
Tìm x biết :
\(\left[\frac{6:\frac{3}{5}-1\frac{1}{16}.\frac{6}{7}}{4\frac{1}{5}.\frac{10}{11}+5\frac{2}{11}}-\frac{\left(\frac{3}{20}+\frac{1}{2}-\frac{1}{15}\right).\frac{12}{49}}{3\frac{1}{3}+\frac{2}{9}}\right].x=2\frac{23}{96}\)
1. thực hiện phép tính
a, 36+3.(4-12) b. \(2-\frac{3}{4}\)
c.\(\frac{18}{24}:\frac{5}{2}+\frac{7}{-10}\) d.\((\frac{12}{199}-\frac{23}{200}+\frac{34}{201})-(\frac{1}{2}-\frac{1}{3}-\frac{1}{6})\)