Brug Mix (reeks 2)

Hoofdmenu Eentje per keer  🖨

Reken uit

1. \(44 + 33 = \ldots\)
2. \(50 + 14 = \ldots\)
3. \(19 + 24 = \ldots\)
4. \(34 + 29 = \ldots\)
5. \(31 + 56 = \ldots\)
6. \(23 + 68 = \ldots\)
7. \(15 + 68 = \ldots\)
8. \(65 + 13 = \ldots\)
9. \(59 + 34 = \ldots\)
10. \(22 + 64 = \ldots\)
11. \(46 + 15 = \ldots\)
12. \(37 + 32 = \ldots\)

---

Reken uit

Verbetersleutel

1. \(\begin{align} & 44 + 33\\= & \color{green}{40} + \color{red}{4} + \color{green}{30} + \color{red}{3} \\= & \color{green}{70} + \color{red}{7} \\= & \color{red}{77} \end{align}\)
2. \(\begin{align} & 50 + 14\\= &50 + \color{green}{10} + \color{red}{4} \\= & \color{green}{60} + \color{red}{4} \\= & \color{red}{64} \end{align}\)
3. \(\begin{align} & 19 + 24\\= & \color{green}{10} + \color{red}{9} + \color{green}{20} + \color{red}{4} \\= & \color{green}{30} + \color{red}{13} \\= & \color{green}{30} + \color{orange}{10} + \color{red}{3} \\= & \color{orange}{40} + \color{red}{3} \\= & \color{red}{43} \end{align}\)
4. \(\begin{align} & 34 + 29\\= & \color{green}{30} + \color{red}{4} + \color{green}{20} + \color{red}{9} \\= & \color{green}{50} + \color{red}{13} \\= & \color{green}{50} + \color{orange}{10} + \color{red}{3} \\= & \color{orange}{60} + \color{red}{3} \\= & \color{red}{63} \end{align}\)
5. \(\begin{align} & 31 + 56\\= & \color{green}{30} + \color{red}{1} + \color{green}{50} + \color{red}{6} \\= & \color{green}{80} + \color{red}{7} \\= & \color{red}{87} \end{align}\)
6. \(\begin{align} & 23 + 68\\= & \color{green}{20} + \color{red}{3} + \color{green}{60} + \color{red}{8} \\= & \color{green}{80} + \color{red}{11} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{1} \\= & \color{orange}{90} + \color{red}{1} \\= & \color{red}{91} \end{align}\)
7. \(\begin{align} & 15 + 68\\= & \color{green}{10} + \color{red}{5} + \color{green}{60} + \color{red}{8} \\= & \color{green}{70} + \color{red}{13} \\= & \color{green}{70} + \color{orange}{10} + \color{red}{3} \\= & \color{orange}{80} + \color{red}{3} \\= & \color{red}{83} \end{align}\)
8. \(\begin{align} & 65 + 13\\= & \color{green}{60} + \color{red}{5} + \color{green}{10} + \color{red}{3} \\= & \color{green}{70} + \color{red}{8} \\= & \color{red}{78} \end{align}\)
9. \(\begin{align} & 59 + 34\\= & \color{green}{50} + \color{red}{9} + \color{green}{30} + \color{red}{4} \\= & \color{green}{80} + \color{red}{13} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{3} \\= & \color{orange}{90} + \color{red}{3} \\= & \color{red}{93} \end{align}\)
10. \(\begin{align} & 22 + 64\\= & \color{green}{20} + \color{red}{2} + \color{green}{60} + \color{red}{4} \\= & \color{green}{80} + \color{red}{6} \\= & \color{red}{86} \end{align}\)
11. \(\begin{align} & 46 + 15\\= & \color{green}{40} + \color{red}{6} + \color{green}{10} + \color{red}{5} \\= & \color{green}{50} + \color{red}{11} \\= & \color{green}{50} + \color{orange}{10} + \color{red}{1} \\= & \color{orange}{60} + \color{red}{1} \\= & \color{red}{61} \end{align}\)
12. \(\begin{align} & 37 + 32\\= & \color{green}{30} + \color{red}{7} + \color{green}{30} + \color{red}{2} \\= & \color{green}{60} + \color{red}{9} \\= & \color{red}{69} \end{align}\)