10 - 20

Hoofdmenu Eentje per keer  🖨

Reken uit

1. \(9 + \color{red}{5} = \)
2. \(6 + \color{red}{5} = \)
3. \(4 + \color{red}{16} = \)
4. \(6 + \color{red}{12} = \)
5. \(8 + \color{red}{7} = \)
6. \(2 + \color{red}{18} = \)
7. \(2 + \color{red}{11} = \)
8. \(2 + \color{red}{14} = \)
9. \(3 + \color{red}{9} = \)
10. \(9 + \color{red}{4} = \)
11. \(4 + \color{red}{14} = \)
12. \(5 + \color{red}{14} = \)

---

Reken uit

Verbetersleutel

1. \(9 + \color{red}{5} = 9 + \color{red}{1} \color{red}{ + } \color{red}{4} = 14\)
2. \(6 + \color{red}{5} = 6 + \color{red}{4} \color{red}{ + } \color{red}{1} = 11\)
3. \(4 + \color{red}{16} = \color{red}{16} + 4 = 20\)
4. \(6 + \color{red}{12} = \color{red}{12} + 6 = 18\)
5. \(8 + \color{red}{7} = 8 + \color{red}{2} \color{red}{ + } \color{red}{5} = 15\)
6. \(2 + \color{red}{18} = \color{red}{18} + 2 = 20\)
7. \(2 + \color{red}{11} = \color{red}{11} + 2 = 13\)
8. \(2 + \color{red}{14} = \color{red}{14} + 2 = 16\)
9. \(3 + \color{red}{9} = 9 + \color{green}{3} = 9 + \color{green}{1 + 2} = 12\)
10. \(9 + \color{red}{4} = 9 + \color{red}{1} \color{red}{ + } \color{red}{3} = 13\)
11. \(4 + \color{red}{14} = \color{red}{14} + 4 = 18\)
12. \(5 + \color{red}{14} = \color{red}{14} + 5 = 19\)