# Brug Mix (reeks 2)

#### Reken uit

1. $$58 + 25 = \ldots$$
2. $$41 + 27 = \ldots$$
3. $$23 + 54 = \ldots$$
4. $$32 + 27 = \ldots$$
5. $$20 + 31 = \ldots$$
6. $$35 + 13 = \ldots$$
7. $$84 + 13 = \ldots$$
8. $$23 + 27 = \ldots$$
9. $$69 + 15 = \ldots$$
10. $$30 + 38 = \ldots$$
11. $$38 + 48 = \ldots$$
12. $$28 + 68 = \ldots$$

#### Reken uit

##### Verbetersleutel

1. \begin{align} & 58 + 25\\= & \color{green}{50} + \color{red}{8} + \color{green}{20} + \color{red}{5} \\= & \color{green}{70} + \color{red}{13} \\= & \color{green}{70} + \color{orange}{10} + \color{red}{3} \\= & \color{orange}{80} + \color{red}{3} \\= & \color{red}{83} \end{align}
2. \begin{align} & 41 + 27\\= & \color{green}{40} + \color{red}{1} + \color{green}{20} + \color{red}{7} \\= & \color{green}{60} + \color{red}{8} \\= & \color{red}{68} \end{align}
3. \begin{align} & 23 + 54\\= & \color{green}{20} + \color{red}{3} + \color{green}{50} + \color{red}{4} \\= & \color{green}{70} + \color{red}{7} \\= & \color{red}{77} \end{align}
4. \begin{align} & 32 + 27\\= & \color{green}{30} + \color{red}{2} + \color{green}{20} + \color{red}{7} \\= & \color{green}{50} + \color{red}{9} \\= & \color{red}{59} \end{align}
5. \begin{align} & 20 + 31\\= &20 + \color{green}{30} + \color{red}{1} \\= & \color{green}{50} + \color{red}{1} \\= & \color{red}{51} \end{align}
6. \begin{align} & 35 + 13\\= & \color{green}{30} + \color{red}{5} + \color{green}{10} + \color{red}{3} \\= & \color{green}{40} + \color{red}{8} \\= & \color{red}{48} \end{align}
7. \begin{align} & 84 + 13\\= & \color{green}{80} + \color{red}{4} + \color{green}{10} + \color{red}{3} \\= & \color{green}{90} + \color{red}{7} \\= & \color{red}{97} \end{align}
8. \begin{align} & 23 + 27\\= & \color{green}{20} + \color{red}{3} + \color{green}{20} + \color{red}{7} \\= & \color{green}{40} + \color{red}{10} \\= & \color{red}{50} \end{align}
9. \begin{align} & 69 + 15\\= & \color{green}{60} + \color{red}{9} + \color{green}{10} + \color{red}{5} \\= & \color{green}{70} + \color{red}{14} \\= & \color{green}{70} + \color{orange}{10} + \color{red}{4} \\= & \color{orange}{80} + \color{red}{4} \\= & \color{red}{84} \end{align}
10. \begin{align} & 30 + 38\\= &30 + \color{green}{30} + \color{red}{8} \\= & \color{green}{60} + \color{red}{8} \\= & \color{red}{68} \end{align}
11. \begin{align} & 38 + 48\\= & \color{green}{30} + \color{red}{8} + \color{green}{40} + \color{red}{8} \\= & \color{green}{70} + \color{red}{16} \\= & \color{green}{70} + \color{orange}{10} + \color{red}{6} \\= & \color{orange}{80} + \color{red}{6} \\= & \color{red}{86} \end{align}
12. \begin{align} & 28 + 68\\= & \color{green}{20} + \color{red}{8} + \color{green}{60} + \color{red}{8} \\= & \color{green}{80} + \color{red}{16} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{6} \\= & \color{orange}{90} + \color{red}{6} \\= & \color{red}{96} \end{align}
Oefeningengenerator vanhoeckes.be/wiskunde 2024-08-09 05:46:01