Question

Tính nhanh

\(\frac{3}{2}\)x\(\frac{4}{5}\)x\(\frac{2}{6}\)x\(\frac{15}{4}\)

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Answer 1

\(\frac{3}{2}\times\frac{4}{5}\times\frac{2}{6}\times\frac{15}{4}\)

\(=\frac{6}{5}\times\frac{2}{6}\times\frac{15}{4}\)

\(=\frac{2}{5}\times\frac{15}{4}\)

\(=\frac{3}{2}\)

Answer 2

3/2 x 4/5 x 2/6 x 15/4 = 3/2

Answer 3

\(\frac{3x4x2x15}{2x5x6x4}\)

Loại 4 x 2 

\(\frac{3x15}{5x6}=\frac{3x3x5}{5x3x2}\)

Loại 3 x 5 

=>\(\frac{3}{2}\)

Answer 4

(3/2x2/6)x(4/5x15/4)

1/2x3=3/2
 

Answer 5

3/2 x 4/5 x 2/6 x 15/4= 3x4x2x15/ 2x5x6x4= 3/2