1 cała i 3/4+2 całe i 1/5+1 cała i 6/10=
1\frac{3}{4}+2\frac{1}{5}+1\frac{6}{10}=1+2+1+\frac{12+4+12}{20}=4\frac{28}{20}=5\frac{8}{20}=5\frac{4}{5}=5,8
2 całe i 1/4+1 cała i 5/8+7/16=
2\frac{1}{4}+1\frac{5}{8}+\frac{7}{16}=2\frac{4}{16}+1\frac{10}{16}+\frac{7}{16}=3\frac{21}{16}=4\frac{5}{16}
1 cała i 4/9+2 i5/6+1 cała i 7/12=
1\frac{4}{9}+2\frac{5}{6}+1\frac{7}{12}=1\frac{16}{36}+2\frac{30}{36}+1\frac{21}{36}=4\frac{67}{36}=5\frac{31}{36}
Zadanie 2
1/3-3/6=
\frac{1}{3}-\frac{3}{6}=\frac{2-3}{6}=-\frac{1}{6}
1/2-3/8=
\frac{1}{2}-\frac{3}{8}=\frac{4-3}{8}=\frac{1}{8}
4/5-19/25=
\frac{4}{5}-\frac{19}{25}=\frac{20-19}{25}=\frac{1}{25}
2 całe i 2/3-1 cała i 4/5=
2\frac{2}{3}-1\frac{4}{5}=2\frac{10}{15}-1\frac{12}{15}=1\frac{25}{15}-1\frac{12}{15}=1\frac{13}{15}
1 cała i 2/6-2/3=
1\frac{2}{6}-\frac{2}{3}=\frac{8}{6}-\frac{4}{6}=\frac{4}{6}=\frac{2}{3}
2 całe i 1/4-1 cała i 6/8=
2\frac{1}{4}-1\frac{6}{8}=2\frac{2}{8}-1\frac{6}{8}=1\frac{10}{8}-1\frac{6}{8}=1\frac{4}{8}=1\frac{1}{2}
3 całe i 4/15-2 cała i 10/15=
3\frac{4}{15}-2\frac{10}{15}=2\frac{19}{15}-2\frac{10}{15}=\frac{9}{15}=\frac{3}{5}
9 całych i 1/2- 3 całe i 5/8=
9\frac{1}{2}-3\frac{5}{8}=9\frac{4}{8}-3\frac{5}{8}=8\frac{12}{8}-3\frac{5}{8}=5\frac{7}{8}
5 całych i 1/10- 4 całe i 3/5=
5\frac{1}{10}-4\frac{3}{5}=5\frac{1}{10}-4\frac{6}{10}=4\frac{11}{10}-4\frac{6}{10}=\frac{5}{10}=\frac{1}{2}
2 całe i 1/21- 1 cała i 5/7=
2\frac{1}{21}-1\frac{5}{7}=2\frac{1}{21}-1\frac{15}{21}=1\frac{22}{21}-1\frac{15}{21}=\frac{7}{21}
1 cała i 1/5- 39/50=
1\frac{1}{5}-\frac{39}{50}=1\frac{10}{50}-\frac{39}{50}=\frac{60}{50}-\frac{39}{50}=\frac{21}{50}
2 całe i 7/9- 1 cała i 1/6=
2\frac{14}{18}-1\frac{3}{18}=1\frac{11}{18}
3 całe i 4/15- 1 cała i 11/30=
3\frac{8}{30}-1\frac{11}{30}=2\frac{38}{30}-1\frac{11}{30}=1\frac{27}{30}=1\frac{9}{10}=1,9
2 całe i 7/30-1 cała i 7/20=
2\frac{7}{30}-1\frac{7}{20}=2\frac{14}{60}-1\frac{21}{60}=1\frac{74}{60}-1\frac{21}{60}=\frac{53}{60}
4 całe i 1/100- 2 całe i 3/50=
4\frac{1}{100}-2\frac{3}{50}=4\frac{1}{100}-2\frac{6}{100}=3\frac{101}{100}-2\frac{6}{100}=1\frac{95}{100}=1\frac{19}{20}