Question

Plisss matematyka z plusem podrecznik nowa wersja dla klasy 6

Zad.2 str 26

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Answer 1

a)

 

\frac{3}{5} + \frac{7}{10} = \frac{6}{10} + \frac{7}{10} = \frac{13}{10} = 1 \frac{3}{10}

 

\frac{4}{15} - \frac{4}{15} = \frac{1}{15}

 

\frac{11}{30} + \frac{1}{6} = \frac{11}{30} + \frac{5}{30} = \frac{16 }{30}

 

b)

 

2 \frac{9}{16} - 1 \frac{1}{4} = 2 \frac{9}{16} - 1 \frac{4}{16} = 1 \frac{5}{16}

 

12 \frac{2}{3} + 1 \frac{3}{4} = 12 \frac{8}{12} + 1 \frac{9}{12} = 13 \frac{17}{12} = 14 \frac{5}{12}

 

8 \frac{1}{8} - \frac{2}{3} = 8 \frac{3}{24} - \frac{16}{24} = 7 \frac{11}{24}

 

 

c)

 

6 \frac{1}{4} - 3 \frac{5}{6} = 6 \frac{3}{12} - 3 \frac{10}{12} = 2 \frac{5}{12}

 

7 \frac{1}{6} + 6 \frac{1}{8} = 7 \frac{4}{24} + 6 \frac{3}{24} = 13 \frac{7}{24}

 

6 \frac{1}{3} - 3 \frac{5}{6} = 6 \frac{2}{6} - 3 \frac{5}{6} = 2 \frac{3}{6}

 

 

d)

 

\frac{3}{8} + \frac{5}{6} - \frac{7}{12} = \frac{9}{24} + \frac{20}{24} - \frac{14}{24} = 1 \frac{5}{24} - \frac{14}{24} = \frac{15}{24}

 

2 \frac{1}{6} - 1 \frac{1}{2} + \frac{1}{8} = 2 \frac{4}{24} - 1 \frac{12}{24} + \frac{3}{24} = 2 \frac{4}{24} - 1 \frac{15}{24} = \frac{13}{24}

 

5 \frac{1}{14} - 2 \frac{1}{4} - 1\frac{3}{7} = 5 \frac{2}{28} - 2 \frac{7}{28} - 1 \frac{12}{28} = 2 \frac{11}{28}

 

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