a. 3 $\frac{9}{10}$ > 2 $\frac{9}{10}$ (Because 3 > 2)
b. 3 $\frac{4}{10}$ < 3 $\frac{9}{10}$ (Because $\frac{9}{10}$ > $\frac{4}{10}$)
c. 5 $\frac{1}{10}$ > 2 $\frac{9}{10}$ (Because $\frac{51}{10}$ > $\frac{29}{10}$)
d. 3 $\frac{4}{10}$ = 3 $\frac{2}{5}$ (Because 3 $\frac{4}{10}$ = 3 $\frac{2}{5}$ = $\frac{34}{10}$)
a. 3 $\frac{9}{10}$ > 2 $\frac{9}{10}$ (Vì 3 > 2)
b. 3 $\frac{4}{10}$ < 3 $\frac{9}{10}$ (Vì $\frac{9}{10}$ > $\frac{4}{10}$)
c. 5 $\frac{1}{10}$ > 2 $\frac{9}{10}$ (Vì $\frac{51}{10}$ > $\frac{29}{10}$)
d. 3 $\frac{4}{10}$ = 3 $\frac{2}{5}$ (Vì 3 $\frac{4}{10}$ = 3 $\frac{2}{5}$ = $\frac{34}{10}$)