Erinimeliste murdude liitmine (2)

Kuidas liita murde, mis on taandamata?

Taandamata murdude liitmine

Näide 1

Vaatame, kuidas liita taandamata murde $\frac{70}{100}$ ja $\frac{4}{8} .$
Selleks on kaks võimalust: liidame murrud kohe või taandame murrud ja alles siis liidame.

Näide 2

Liidame murrud $\frac{5}{10}$ ja $\frac{37}{40} .$ Esimene murd on taandamata kujul, teine murd taandatud kujul.

Kumb võimalus tundub sulle lihtsam esimeses näites, kumb teises näites?

Seotud sisu

Harjutan

$\frac{5}{20} + \frac{6}{8} = \frac{}{} + \frac{}{} = \frac{+}{} = \frac{}{} =$

$\frac{12}{30} + \frac{4}{6} = \frac{\overset{}{}}{} + \frac{\overset{}{}}{} = \frac{+}{} = \frac{}{} = \frac{}{}$

$\frac{4}{8} + \frac{8}{16} = \frac{}{} + \frac{}{} = \frac{}{} =$

$\frac{8}{10} + \frac{3}{12} = \frac{\overset{}{}}{} + \frac{\overset{}{}}{} = \frac{+}{} = \frac{}{} = \frac{}{}$

$\frac{6}{12} + \frac{15}{20} = \frac{\overset{}{}}{} + \frac{\overset{}{}}{} = \frac{+}{} = \frac{}{} = \frac{}{}$

$\frac{4}{8} + \frac{60}{110} = \frac{\overset{}{}}{} + \frac{\overset{}{}}{} = \frac{+}{} = \frac{}{} = \frac{}{}$

$\frac{23}{25} + \frac{9}{30} = \frac{}{}$
$\frac{25}{30} + \frac{5}{9} = \frac{}{}$
$\frac{1}{2} + \frac{19}{20} = \frac{}{}$
$\frac{15}{18} + \frac{1}{3} = \frac{}{}$

$\frac{2}{3} + \frac{6}{10} = \frac{}{}$
$\frac{39}{50} + \frac{20}{30} = \frac{}{}$
$\frac{2}{4} + \frac{11}{18} = \frac{}{}$
$\frac{16}{18} + \frac{1}{2} = \frac{}{}$

$\frac{2}{4} + \frac{14}{16} = \frac{}{}$
$\frac{2}{20} + \frac{10}{18} = \frac{}{}$
$\frac{48}{100} + \frac{11}{15} = \frac{}{}$
$\frac{28}{30} + \frac{1}{2} = \frac{}{}$

$\frac{\overset{}{1}}{3} + \frac{\overset{}{1}}{4} + \frac{\overset{}{1}}{6} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{1}}{10} + \frac{\overset{}{1}}{15} + \frac{\overset{}{1}}{30} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{3}}{4} + \frac{\overset{}{5}}{6} + \frac{\overset{}{7}}{8} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{1}}{2} + \frac{\overset{}{3}}{4} + \frac{\overset{}{7}}{8} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{2}}{3} + \frac{\overset{}{4}}{5} + \frac{\overset{}{2}}{15} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{1}}{2} + \frac{\overset{}{5}}{22} + \frac{\overset{}{20}}{33} = \frac{+ +}{} = \frac{}{} = \frac{}{}$

$\frac{\overset{}{1}}{3} + \frac{\overset{}{4}}{27} + \frac{\overset{}{5}}{18} + \frac{\overset{}{1}}{6} =$
$= \frac{+ + +}{} = \frac{}{} = \frac{}{}$