Tính bằng cách thuận tiện. (250 x 0,48) x 5 5/8 x 9/13 + 4/13 x 5/8

= (250 x \(\frac{{48}}{{100}}\)) x 5

= (250 x 0,48) x 5

= (250 x\(\frac{{12}}{{25}}\)) x 5

= 120 x 5

= 600

= \(\frac{5}{8} \times \frac{9}{{13}} + \frac{4}{{13}} \times \frac{5}{8}\)

 = \(\frac{5}{8} \times 1\)

 = \(\frac{5}{8}\)