Tính: a) \(2 + \frac{3}{4}\), b) \(\frac{1}{3} + \frac{3}{2} - \frac{7}{4}\), c) \(\frac{1}{6} + \frac{3}{8} - \frac{1}{4}\)
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Đề bài
Bài 1. Tính.
a) \(2 + \frac{3}{4}\)
b) \(\frac{1}{3} + \frac{3}{2} - \frac{7}{4}\)
c) \(\frac{1}{6} + \frac{3}{8} - \frac{1}{4}\)
d) \(\frac{5}{12} + \frac{3}{8} \times \frac{4}{9}\)
e) \(\frac{4}{5} - \frac{1}{5} \times \frac{7}{2}\)
f) \(\frac{16}{9} - \frac{4}{15} : \frac{2}{5}\)
Bài 2. Tính:
a) \(\frac{7}{9} \div \frac{3}{14} : \frac{5}{8}\)
b) \(\frac{3}{5} \times \frac{4}{21} \times \frac{25}{3}\)
c) \(\frac{15}{16} : \frac{8}{3} + \frac{3}{4} \div \frac{8}{3}\)
d) \(\frac{21}{4} \times \frac{16}{14} \times \frac{8}{3}\)
Bài 3. Tính bằng cách thuận tiện:
a) \(\frac{21}{25} \times \frac{2}{5} + \frac{21}{25} \times \frac{3}{5}\)
b) \(\frac{5}{2} \times \frac{3}{5} - \frac{9}{10} \times \frac{5}{3}\)
c) \(\frac{3}{9} \times \frac{7}{3} - \frac{3}{10} \times \frac{3}{4}\)
d) \(\frac{7}{12} + \frac{6}{9} + \frac{3}{8} + \frac{1}{3} + \frac{5}{8}\)
Bài 4. Tìm x
a) \(x \times \frac{3}{7} = 1 - \frac{5}{8}\)
b) \(\frac{8}{3} - x = \frac{9}{10} \times \frac{5}{3}\)
c) \(x : \frac{5}{9} = 2 - \frac{11}{8}\)
d) \(\frac{x}{2/3} + x \times \frac{7}{3} = \frac{11}{4}\)
Đề bài
Bài 1. Tính.
a) \(2 + \frac{3}{4}\)
b) \(\frac{1}{3} + \frac{3}{2} - \frac{7}{4}\)
c) \(\frac{1}{6} + \frac{3}{8} - \frac{1}{4}\)
d) \(\frac{5}{12} + \frac{3}{8} \times \frac{4}{9}\)
e) \(\frac{4}{5} - \frac{1}{5} \times \frac{7}{2}\)
f) \(\frac{16}{9} - \frac{4}{15} : \frac{2}{5}\)
Bài 2. Tính:
a) \(\frac{7}{9} \div \frac{3}{14} : \frac{5}{8}\)
b) \(\frac{3}{5} \times \frac{4}{21} \times \frac{25}{3}\)
c) \(\frac{15}{16} : \frac{8}{3} + \frac{3}{4} \div \frac{8}{3}\)
d) \(\frac{21}{4} \times \frac{16}{14} \times \frac{8}{3}\)
Bài 3. Tính bằng cách thuận tiện:
a) \(\frac{21}{25} \times \frac{2}{5} + \frac{21}{25} \times \frac{3}{5}\)
b) \(\frac{5}{2} \times \frac{3}{5} - \frac{9}{10} \times \frac{5}{3}\)
c) \(\frac{3}{9} \times \frac{7}{3} - \frac{3}{10} \times \frac{3}{4}\)
d) \(\frac{7}{12} + \frac{6}{9} + \frac{3}{8} + \frac{1}{3} + \frac{5}{8}\)
Bài 4. Tìm x
a) \(x \times \frac{3}{7} = 1 - \frac{5}{8}\)
b) \(\frac{8}{3} - x = \frac{9}{10} \times \frac{5}{3}\)
c) \(x : \frac{5}{9} = 2 - \frac{11}{8}\)
d) \(\frac{x}{2/3} + x \times \frac{7}{3} = \frac{11}{4}\)