Lấy 10 Ví Dụ Về Cộng Trừ 2 Phân Số Không Cùng Mẫu Số 02/07/2021 Bởi Amaya Lấy 10 Ví Dụ Về Cộng Trừ 2 Phân Số Không Cùng Mẫu Số
1) $\frac{3}{5}+\frac{7}{10}=\frac{3.2}{5.2}+\frac{7}{10}=\frac{6}{10}+\frac{7}{10}=\frac{13}{10}$ 2) $\frac{7}{10}-\frac{3}{5}=\frac{7}{10}-\frac{3.2}{10}=\frac{7}{10}+\frac{6}{10}=\frac{1}{10}$ 3) $\frac{5}{7}-\frac{3}{14}=\frac{5.2}{7.2}-\frac{3}{14}=\frac{10}{14}-\frac{3}{14}=\frac{7}{14}$ 4) $\frac{5}{7}+\frac{3}{14}=\frac{5.2}{7.2}+\frac{3}{14}=\frac{10}{14}+\frac{3}{14}=\frac{13}{14}$ 5) $\frac{5}{8}-\frac{12}{40}=\frac{5.5}{8.5}-\frac{12}{40}=\frac{25}{40}-\frac{12}{40}=\frac{13}{40}$ 6) $\frac{5}{8}+\frac{12}{40}=\frac{5.5}{8.5}+\frac{12}{40}=\frac{25}{40}+\frac{12}{40}=\frac{37}{40}$ 7) $\frac{3}{6}+\frac{5}{12}=\frac{3.2}{6.2}+\frac{5}{12}=\frac{6}{12}+\frac{5}{12}=\frac{11}{12}$ 8)$\frac{3}{6}-\frac{5}{12}=\frac{3.2}{6.2}-\frac{5}{12}=\frac{6}{12}-\frac{5}{12}=\frac{1}{12}$ 9) $\frac{8}{3}-\frac{3}{4}=\frac{8.4}{3.4}-\frac{3.3}{4.3}=\frac{32}{12}-\frac{9}{12}=\frac{23}{12}$ 10) $\frac{8}{3}+\frac{3}{4}\frac{8.4}{3.4}+\frac{3.3}{4.3}=\frac{32}{12}+\frac{9}{12}=\frac{41}{12}$ Bình luận
1) $\frac{3}{5}+\frac{7}{10}=\frac{3.2}{5.2}+\frac{7}{10}=\frac{6}{10}+\frac{7}{10}=\frac{13}{10}$
2) $\frac{7}{10}-\frac{3}{5}=\frac{7}{10}-\frac{3.2}{10}=\frac{7}{10}+\frac{6}{10}=\frac{1}{10}$
3) $\frac{5}{7}-\frac{3}{14}=\frac{5.2}{7.2}-\frac{3}{14}=\frac{10}{14}-\frac{3}{14}=\frac{7}{14}$
4) $\frac{5}{7}+\frac{3}{14}=\frac{5.2}{7.2}+\frac{3}{14}=\frac{10}{14}+\frac{3}{14}=\frac{13}{14}$
5) $\frac{5}{8}-\frac{12}{40}=\frac{5.5}{8.5}-\frac{12}{40}=\frac{25}{40}-\frac{12}{40}=\frac{13}{40}$
6) $\frac{5}{8}+\frac{12}{40}=\frac{5.5}{8.5}+\frac{12}{40}=\frac{25}{40}+\frac{12}{40}=\frac{37}{40}$
7) $\frac{3}{6}+\frac{5}{12}=\frac{3.2}{6.2}+\frac{5}{12}=\frac{6}{12}+\frac{5}{12}=\frac{11}{12}$
8)$\frac{3}{6}-\frac{5}{12}=\frac{3.2}{6.2}-\frac{5}{12}=\frac{6}{12}-\frac{5}{12}=\frac{1}{12}$
9) $\frac{8}{3}-\frac{3}{4}=\frac{8.4}{3.4}-\frac{3.3}{4.3}=\frac{32}{12}-\frac{9}{12}=\frac{23}{12}$
10) $\frac{8}{3}+\frac{3}{4}\frac{8.4}{3.4}+\frac{3.3}{4.3}=\frac{32}{12}+\frac{9}{12}=\frac{41}{12}$