Brug Mix (reeks 2)

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1. \(10 + 26 = \ldots\)
2. \(13 + 42 = \ldots\)
3. \(84 + 11 = \ldots\)
4. \(51 + 39 = \ldots\)
5. \(57 + 24 = \ldots\)
6. \(40 + 35 = \ldots\)
7. \(64 + 26 = \ldots\)
8. \(55 + 12 = \ldots\)
9. \(52 + 11 = \ldots\)
10. \(66 + 26 = \ldots\)
11. \(59 + 31 = \ldots\)
12. \(55 + 11 = \ldots\)

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Verbetersleutel

1. \(\begin{align} & 10 + 26\\= &10 + \color{green}{20} + \color{red}{6} \\= & \color{green}{30} + \color{red}{6} \\= & \color{red}{36} \end{align}\)
2. \(\begin{align} & 13 + 42\\= & \color{green}{10} + \color{red}{3} + \color{green}{40} + \color{red}{2} \\= & \color{green}{50} + \color{red}{5} \\= & \color{red}{55} \end{align}\)
3. \(\begin{align} & 84 + 11\\= & \color{green}{80} + \color{red}{4} + \color{green}{10} + \color{red}{1} \\= & \color{green}{90} + \color{red}{5} \\= & \color{red}{95} \end{align}\)
4. \(\begin{align} & 51 + 39\\= & \color{green}{50} + \color{red}{1} + \color{green}{30} + \color{red}{9} \\= & \color{green}{80} + \color{red}{10} \\= & \color{red}{90} \end{align}\)
5. \(\begin{align} & 57 + 24\\= & \color{green}{50} + \color{red}{7} + \color{green}{20} + \color{red}{4} \\= & \color{green}{70} + \color{red}{11} \\= & \color{green}{70} + \color{orange}{10} + \color{red}{1} \\= & \color{orange}{80} + \color{red}{1} \\= & \color{red}{81} \end{align}\)
6. \(\begin{align} & 40 + 35\\= &40 + \color{green}{30} + \color{red}{5} \\= & \color{green}{70} + \color{red}{5} \\= & \color{red}{75} \end{align}\)
7. \(\begin{align} & 64 + 26\\= & \color{green}{60} + \color{red}{4} + \color{green}{20} + \color{red}{6} \\= & \color{green}{80} + \color{red}{10} \\= & \color{red}{90} \end{align}\)
8. \(\begin{align} & 55 + 12\\= & \color{green}{50} + \color{red}{5} + \color{green}{10} + \color{red}{2} \\= & \color{green}{60} + \color{red}{7} \\= & \color{red}{67} \end{align}\)
9. \(\begin{align} & 52 + 11\\= & \color{green}{50} + \color{red}{2} + \color{green}{10} + \color{red}{1} \\= & \color{green}{60} + \color{red}{3} \\= & \color{red}{63} \end{align}\)
10. \(\begin{align} & 66 + 26\\= & \color{green}{60} + \color{red}{6} + \color{green}{20} + \color{red}{6} \\= & \color{green}{80} + \color{red}{12} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{2} \\= & \color{orange}{90} + \color{red}{2} \\= & \color{red}{92} \end{align}\)
11. \(\begin{align} & 59 + 31\\= & \color{green}{50} + \color{red}{9} + \color{green}{30} + \color{red}{1} \\= & \color{green}{80} + \color{red}{10} \\= & \color{red}{90} \end{align}\)
12. \(\begin{align} & 55 + 11\\= & \color{green}{50} + \color{red}{5} + \color{green}{10} + \color{red}{1} \\= & \color{green}{60} + \color{red}{6} \\= & \color{red}{66} \end{align}\)