4) 1/10 + 7/100 = ...; 5) 10/21 - 3/14 =
Реши
Сверь числа и знаки с фото.
- \(\frac{1}{10} + \frac{7}{100} = \frac{100}{1000} + \) [обрезано]
- \(\frac{10}{21} - \frac{3}{14} = \) ___
\(\frac{1}{10}+\frac{7}{100}=\frac{100}{1000}+\frac{70}{1000}=\frac{170}{1000}=\frac{17}{100}\)
\(\frac{10}{21}-\frac{3}{14}=\frac{20}{42}-\frac{9}{42}=\frac{11}{42}\)
Обсуждение
4 сообщенияРеши примеры от 5 до 24
Ответы 5–24:
\(\frac{11}{42}\)
\(\frac{11}{20}\)
\(\frac{3}{56}\)
\(\frac{29}{24}=1\frac{5}{24}\)
\(\frac{14}{65}\)
\(\frac{19}{36}\)
\(\frac{3}{2}=1\frac{1}{2}\)
\(\frac{1}{20}\)
\(\frac{7}{165}\)
\(\frac{69}{140}\)
\(\frac{17}{30}\)
\(\frac{37}{18}=2\frac{1}{18}\)
\(\frac{1}{252}\)
\(\frac{101}{72}=1\frac{29}{72}\)
\(\frac{11}{24}\)
\(\frac{13}{27}\)
\(\frac{21}{200}\)
\(\frac{1}{27}\)
\(\frac{11}{48}\)
\(\frac{9}{26}\)
Реши пример от 5 до 24 с решением
Вот примеры 5–24 с приведением к общему знаменателю:
5. \(\frac{10}{21}-\frac{3}{14}=\frac{20}{42}-\frac{9}{42}=\frac{11}{42}\)
6. \(\frac{2}{5}+\frac{3}{20}=\frac{8}{20}+\frac{3}{20}=\frac{11}{20}\)
7. \(\frac{5}{8}-\frac{4}{7}=\frac{35}{56}-\frac{32}{56}=\frac{3}{56}\)
8. \(\frac{7}{8}+\frac{1}{3}=\frac{21}{24}+\frac{8}{24}=\frac{29}{24}=1\frac{5}{24}\)
9. \(\frac{3}{5}-\frac{5}{13}=\frac{39}{65}-\frac{25}{65}=\frac{14}{65}\)
10. \(\frac{7}{12}-\frac{1}{18}=\frac{21}{36}-\frac{2}{36}=\frac{19}{36}\)
11. \(\frac{3}{5}+\frac{9}{10}=\frac{6}{10}+\frac{9}{10}=\frac{15}{10}=\frac{3}{2}=1\frac{1}{2}\)
12. \(\frac{1}{5}-\frac{3}{20}=\frac{4}{20}-\frac{3}{20}=\frac{1}{20}\)
13. \(\frac{14}{33}-\frac{21}{55}=\frac{70}{165}-\frac{63}{165}=\frac{7}{165}\)
14. \(\frac{1}{28}+\frac{16}{35}=\frac{5}{140}+\frac{64}{140}=\frac{69}{140}\)
15. \(\frac{7}{24}+\frac{11}{40}=\frac{35}{120}+\frac{33}{120}=\frac{68}{120}=\frac{17}{30}\)
16. \(\frac{7}{6}+\frac{16}{18}=\frac{21}{18}+\frac{16}{18}=\frac{37}{18}=2\frac{1}{18}\)
17. \(\frac{5}{28}-\frac{11}{63}=\frac{45}{252}-\frac{44}{252}=\frac{1}{252}\)
18. \(\frac{17}{24}+\frac{25}{36}=\frac{51}{72}+\frac{50}{72}=\frac{101}{72}=1\frac{29}{72}\)
19. \(\frac{7}{8}-\frac{5}{12}=\frac{21}{24}-\frac{10}{24}=\frac{11}{24}\)
20. \(\frac{16}{27}-\frac{1}{9}=\frac{16}{27}-\frac{3}{27}=\frac{13}{27}\)
21. \(\frac{9}{50}-\frac{3}{40}=\frac{36}{200}-\frac{15}{200}=\frac{21}{200}\)
22. \(\frac{1}{3}-\frac{8}{27}=\frac{9}{27}-\frac{8}{27}=\frac{1}{27}\)
23. \(\frac{7}{16}-\frac{5}{24}=\frac{21}{48}-\frac{10}{48}=\frac{11}{48}\)
24. \(\frac{12}{13}-\frac{15}{26}=\frac{24}{26}-\frac{15}{26}=\frac{9}{26}\)
