Temat: Działania na ułamkach
Wyniki kolejnych działań to:
[tex]\huge\boxed{\boxed{11\frac{29}{36}} \ , \ \boxed{1\frac{55}{63}} \ , \ \boxed{2\frac{7}{10}} \ , \ \boxed{1\frac{19}{45}}}[/tex]
1)
[tex]4\frac{5}{12}+7\frac{7}{18}=4\frac{5\cdot3}{12\cdot3}+7\frac{7\cdot2}{18\cdot2}=4\frac{15}{36}+7\frac{14}{36}=11\frac{29}{36}\\[/tex]
2)
[tex]4\frac{3}{7}-2\frac{5}{9}=4\frac{3\cdot9}{7\cdot9}-2\frac{5\cdot7}{9\cdot7}=4\frac{27}{63}-2\frac{35}{63}=3\frac{90}{63}-2\frac{35}{63}=2\frac{55}{63}\\[/tex]
3)
[tex]2\frac{3}{5}\cdot1\frac{1}{26}=\frac{2\cdot5+3}{5}\cdot\frac{1\cdot26+1}{26}=\frac{10+3}{5}\cdot\frac{26+1}{26}=\frac{\not13^1}{5}\cdot\frac{27}{\not26_2}=\frac{27}{10}=2\frac{7}{10}\\[/tex]
4)
[tex]3\frac{5}{9}:2\frac{1}{2}=\frac{3\cdot9+5}{9}:\frac{2\cdot2+1}{2}=\frac{27+5}{9}:\frac{4+1}{2}=\frac{32}{9}:\frac{5}{2}=\frac{32}{9}\cdot\frac{2}{5}=\frac{64}{45}=1\frac{19}{45}\\[/tex]
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Temat: Działania na ułamkach
Wyniki kolejnych działań to:
[tex]\huge\boxed{\boxed{11\frac{29}{36}} \ , \ \boxed{1\frac{55}{63}} \ , \ \boxed{2\frac{7}{10}} \ , \ \boxed{1\frac{19}{45}}}[/tex]
1)
[tex]4\frac{5}{12}+7\frac{7}{18}=4\frac{5\cdot3}{12\cdot3}+7\frac{7\cdot2}{18\cdot2}=4\frac{15}{36}+7\frac{14}{36}=11\frac{29}{36}\\[/tex]
2)
[tex]4\frac{3}{7}-2\frac{5}{9}=4\frac{3\cdot9}{7\cdot9}-2\frac{5\cdot7}{9\cdot7}=4\frac{27}{63}-2\frac{35}{63}=3\frac{90}{63}-2\frac{35}{63}=2\frac{55}{63}\\[/tex]
3)
[tex]2\frac{3}{5}\cdot1\frac{1}{26}=\frac{2\cdot5+3}{5}\cdot\frac{1\cdot26+1}{26}=\frac{10+3}{5}\cdot\frac{26+1}{26}=\frac{\not13^1}{5}\cdot\frac{27}{\not26_2}=\frac{27}{10}=2\frac{7}{10}\\[/tex]
4)
[tex]3\frac{5}{9}:2\frac{1}{2}=\frac{3\cdot9+5}{9}:\frac{2\cdot2+1}{2}=\frac{27+5}{9}:\frac{4+1}{2}=\frac{32}{9}:\frac{5}{2}=\frac{32}{9}\cdot\frac{2}{5}=\frac{64}{45}=1\frac{19}{45}\\[/tex]