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5. Oblicz: 5 9 10 e) II 8 = 9 a) 5.5 b) 3.3 - c) 3.5 - d) 12.3 - 3 f) 3 4 17 = 5 39 help na jutro zdj w załączniku​



5 Oblicz 5 9 10 E II 8 9 A 55 B 33 C 35 D 123 3 F 3 4 17 5 39 Help Na Jutro Zdj W Załączniku class=

Odpowiedź :

Velta

a) [tex]5\cdot\frac{5}{9}=\frac{5\cdot5}{9}=\frac{25}{9}=\boxed{2\frac{7}{9}}[/tex]

b) [tex]3\cdot\frac{3}{5}=\frac{3\cdot3}{5}=\frac{9}{5}=\boxed{1\frac{4}{5}}[/tex]

c) [tex]3\cdot\frac{5}{6}=\frac{3\cdot5}{6}=\frac{15}{6}=\boxed{2\frac{3\div3}{6\div3}=2\frac{1}{2}}[/tex]

d) [tex]12\cdot\frac{2}{5}=\frac{12\cdot2}{5}=\frac{24}{5}=\boxed{4\frac{4}{5}}[/tex]

e) [tex]\frac{9}{10}\cdot8=\frac{9\cdot8}{10}=\frac{72}{10}=\boxed{7\frac{2}{10}=7{,}2=7\frac{2\div2}{10\div2}=7\frac{1}{5}}[/tex]

f) [tex]\frac{3}{4}\cdot17=\frac{3\cdot17}{4}=\frac{51}{4}=\boxed{12\frac{3}{4}}[/tex]

Odpowiedź:

5 * 5/9 = 25/9 = 2 i 7/9

3 * 3/5 = 9/5 = 1 i 4/5

3 *  5/6 = 15/6 = 2 i 3/6 = 2 i 1/2

12 * 2/5 = 24/5 = 4 i 4/5

9/10 * 8 = 72/10 = 7 i 2/10 = 7 i 1/5

3/4 * 17 = 51/4 = 12 i 3/4

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