a)
1 \frac{1}{6} + 3\frac{2}{3}=1 \frac{1}{6} + 3\frac{4}{6}=4\frac{5}{6}
b)
4 \frac{2}{5} + 2 \frac{3}{10}=4,4+2,3=6,7
albo
4 \frac{2}{5} + 2 \frac{3}{10}=4\frac{4}{10}+2\frac{3}{10}=6\frac{7}{10}
c)
4 \frac{5}{6} + 2 \frac{2}{3}=4\frac{5}{6}+2\frac{4}{6}=6\frac{9}{6}=7\frac{3}{6}=7\frac{1}{2}
d)
9\frac{1}{2}+3\frac{3}{8}=9,5+3,375=12,875
albo
9\frac{1}{2}+3\frac{3}{8}=9\frac{4}{8}+3\frac{3}{8}=12\frac{7}{8}
e)
5\frac{1}{3}+\frac{2}{3}+1\frac{1}{6}=5\frac{2}{6}+\frac{4}{6}+1\frac{1}{6}=6\frac{7}{6}=7\frac{1}{6}
albo
5\frac{1}{3}+\frac{2}{3}+1\frac{1}{6}=\frac{16}{3}+\frac{2}{3}+\frac{7}{6}=\frac{32+4+7}{6}=\frac{43}{6}=7\frac{1}{6}
f)
3\frac{2}{5}+\frac{7}{10}+1\frac{1}{2}=3,4+0,7+1,5=4,1+1,5=5,6