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- \(56 + 6 = \ldots\)
- \(79 + 4 = \ldots\)
- \(6 + 15 = \ldots\)
- \(57 + 5 = \ldots\)
- \(74 + 7 = \ldots\)
- \(53 + 9 = \ldots\)
- \(18 + 3 = \ldots\)
- \(5 + 48 = \ldots\)
- \(8 + 63 = \ldots\)
- \(9 + 52 = \ldots\)
- \(7 + 59 = \ldots\)
- \(9 + 55 = \ldots\)
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Verbetersleutel
- \(\begin{align} & 56 + 6 \\= & 56 + \color{green}{4} + \color{red}{2} \\= & \color{green}{60} + \color{red}{2} \\= & \color{red}{62} \end{align}\)
- \(\begin{align} & 79 + 4 \\= & 79 + \color{green}{1} + \color{red}{3} \\= & \color{green}{80} + \color{red}{3} \\= & \color{red}{83} \end{align}\)
- \(\begin{align} & 6 + 15 \\= & 15 + 6 \\= & 15 + \color{green}{5} + \color{red}{1} \\= & \color{green}{20} + \color{red}{1} \\= & \color{red}{21} \end{align}\)
- \(\begin{align} & 57 + 5 \\= & 57 + \color{green}{3} + \color{red}{2} \\= & \color{green}{60} + \color{red}{2} \\= & \color{red}{62} \end{align}\)
- \(\begin{align} & 74 + 7 \\= & 74 + \color{green}{6} + \color{red}{1} \\= & \color{green}{80} + \color{red}{1} \\= & \color{red}{81} \end{align}\)
- \(\begin{align} & 53 + 9 \\= & 53 + \color{green}{7} + \color{red}{2} \\= & \color{green}{60} + \color{red}{2} \\= & \color{red}{62} \end{align}\)
- \(\begin{align} & 18 + 3 \\= & 18 + \color{green}{2} + \color{red}{1} \\= & \color{green}{20} + \color{red}{1} \\= & \color{red}{21} \end{align}\)
- \(\begin{align} & 5 + 48 \\= & 48 + 5 \\= & 48 + \color{green}{2} + \color{red}{3} \\= & \color{green}{50} + \color{red}{3} \\= & \color{red}{53} \end{align}\)
- \(\begin{align} & 8 + 63 \\= & 63 + 8 \\= & 63 + \color{green}{7} + \color{red}{1} \\= & \color{green}{70} + \color{red}{1} \\= & \color{red}{71} \end{align}\)
- \(\begin{align} & 9 + 52 \\= & 52 + 9 \\= & 52 + \color{green}{8} + \color{red}{1} \\= & \color{green}{60} + \color{red}{1} \\= & \color{red}{61} \end{align}\)
- \(\begin{align} & 7 + 59 \\= & 59 + 7 \\= & 59 + \color{green}{1} + \color{red}{6} \\= & \color{green}{60} + \color{red}{6} \\= & \color{red}{66} \end{align}\)
- \(\begin{align} & 9 + 55 \\= & 55 + 9 \\= & 55 + \color{green}{5} + \color{red}{4} \\= & \color{green}{60} + \color{red}{4} \\= & \color{red}{64} \end{align}\)