Question

a, Rút gọn phân số 

\(\frac{108108}{102102}\)    

b, Tính nhanh 

\(\frac{2242,82\div100+37411,8\div1000}{25\times14,96\times16}\)

Answer 1

                                                      Bài giải

a, \(\frac{108108}{102102}=\frac{108108\text{ : }1001}{102102\text{ : }1001}=\frac{108}{102}=\frac{54}{51}\)

b, \(\frac{2242,82\text{ : }100+37411,8\text{ : }1000}{25\text{ x }14,96\text{ x }16}=\frac{2242,82\text{ x }\frac{1}{100}+37411,8\text{ x }\frac{1}{100}\text{ x }\frac{1}{10}}{25\text{ x }14,96\text{ x }16}\)

\(=\frac{\frac{1}{100}\text{ x }\left(2242,82+37411,8\text{ x }\frac{1}{10}\right)}{25\text{ x }14,96\text{ x }16}=\frac{\frac{1}{100}\text{ x }\left(2242,82+3741,18\right)}{25\text{ x }14,96\text{ x }16}=\frac{\frac{1}{100}\text{ x }5984}{25\text{ x } 239,36}=\frac{\frac{1}{100}\text{ x }25}{25}=\frac{1}{100}\)

Answer 2

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