4 DBH E MATEMATIKA ZATIKIAK BATUKETAK KENKETAK

Gelan egin ditugun ariketak:

• $\displaystyle \frac{1}{2}+\frac{1}{4}+\frac{1}{8}=\frac{7}{8}$
• $\displaystyle \frac{3}{4}+ 2 - \frac{13}{10}=\frac{29}{20}$
• $\displaystyle 1 - \left( \frac{1}{3} + \frac{1}{6}\right)= \frac{1}{2}$
• $\displaystyle \frac{7}{3} - \left( \frac{2}{6} + \frac{5}{9} \right) = \frac{13}{9}$
• $\displaystyle \frac{5}{2} - \left[ 1 - \left( \frac{2}{3} - \frac{1}{4} \right) \right]= \frac{23}{12}$
• $\displaystyle \frac{1}{3}- \left[ \frac{3}{4}+\left( \frac{4}{5}-1\right) - \frac{1}{20} \right]=-\frac{1}{6}$

Etxerako lana: 21. orrialdeko 5. ariketatik a) atala:
$$ \left( \frac{3}{5} - \frac{1}{4} + 2 \right) - \left( \frac{3}{4} - \frac{2}{5} + 1 \right) =$$