Breuken optellen (reeks 1)

Tel de breuken op

1. $$\frac{4}{7}+\frac{2}{9}$$
2. $$\frac{6}{7}+\frac{5}{6}$$
3. $$\frac{10}{3}+\frac{7}{9}$$
4. $$\frac{8}{5}+\frac{5}{9}$$
5. $$\frac{6}{7}+\frac{8}{11}$$
6. $$\frac{7}{3}+\frac{3}{5}$$
7. $$\frac{9}{2}+\frac{2}{9}$$
8. $$\frac{9}{8}+\frac{7}{11}$$
9. $$\frac{4}{5}+\frac{2}{7}$$
10. $$\frac{10}{3}+\frac{8}{5}$$
11. $$\frac{9}{5}+\frac{3}{11}$$
12. $$\frac{10}{11}+\frac{3}{5}$$

Tel de breuken op

Verbetersleutel

1. $$\frac{4}{7}+\frac{2}{9}\\=\frac{36}{63}+\frac{14}{63}\\=\frac{36+14}{63}\\=\frac{50}{63}$$
2. $$\frac{6}{7}+\frac{5}{6}\\=\frac{36}{42}+\frac{35}{42}\\=\frac{36+35}{42}\\=\frac{71}{42}$$
3. $$\frac{10}{3}+\frac{7}{9}\\=\frac{30}{9}+\frac{7}{9}\\=\frac{30+7}{9}\\=\frac{37}{9}$$
4. $$\frac{8}{5}+\frac{5}{9}\\=\frac{72}{45}+\frac{25}{45}\\=\frac{72+25}{45}\\=\frac{97}{45}$$
5. $$\frac{6}{7}+\frac{8}{11}\\=\frac{66}{77}+\frac{56}{77}\\=\frac{66+56}{77}\\=\frac{122}{77}$$
6. $$\frac{7}{3}+\frac{3}{5}\\=\frac{35}{15}+\frac{9}{15}\\=\frac{35+9}{15}\\=\frac{44}{15}$$
7. $$\frac{9}{2}+\frac{2}{9}\\=\frac{81}{18}+\frac{4}{18}\\=\frac{81+4}{18}\\=\frac{85}{18}$$
8. $$\frac{9}{8}+\frac{7}{11}\\=\frac{99}{88}+\frac{56}{88}\\=\frac{99+56}{88}\\=\frac{155}{88}$$
9. $$\frac{4}{5}+\frac{2}{7}\\=\frac{28}{35}+\frac{10}{35}\\=\frac{28+10}{35}\\=\frac{38}{35}$$
10. $$\frac{10}{3}+\frac{8}{5}\\=\frac{50}{15}+\frac{24}{15}\\=\frac{50+24}{15}\\=\frac{74}{15}$$
11. $$\frac{9}{5}+\frac{3}{11}\\=\frac{99}{55}+\frac{15}{55}\\=\frac{99+15}{55}\\=\frac{114}{55}$$
12. $$\frac{10}{11}+\frac{3}{5}\\=\frac{50}{55}+\frac{33}{55}\\=\frac{50+33}{55}\\=\frac{83}{55}$$
Oefeningengenerator vanhoeckes.be/wiskunde 2021-12-02 02:19:06