Số bé nhất trong các số 313 569, 313 659, 351 169, 353 196 là:   

\(\frac{{39}}{{45}}\) + \(\frac{{13}}{{15}}\) = ………………………………

\(\frac{{21}}{{18}}\) – \(\frac{{10}}{9}\) = ………………………………

9 × \(\frac{5}{{63}}\) = ………………………………

\(\frac{1}{7}\) : \(\frac{5}{{28}}\) = ………………………………

168 413 + 250 930

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183 251 – 169 061

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436 155 × 28

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845 207 : 27

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\(\frac{1}{4}\) dm² 3 cm² = ……… cm²

\(\frac{2}{3}\) giờ 32 phút = ……… phút22222222