Brug Mix (reeks 2)

Hoofdmenu Eentje per keer  🖨

Reken uit

1. \(68 + 26 = \ldots\)
2. \(12 + 15 = \ldots\)
3. \(88 + 6 = \ldots\)
4. \(57 + 10 = \ldots\)
5. \(24 + 32 = \ldots\)
6. \(84 + 10 = \ldots\)
7. \(52 + 36 = \ldots\)
8. \(58 + 31 = \ldots\)
9. \(63 + 28 = \ldots\)
10. \(22 + 38 = \ldots\)
11. \(14 + 57 = \ldots\)
12. \(35 + 59 = \ldots\)

---

Reken uit

Verbetersleutel

1. \(\begin{align} & 68 + 26\\= & \color{green}{60} + \color{red}{8} + \color{green}{20} + \color{red}{6} \\= & \color{green}{80} + \color{red}{14} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{4} \\= & \color{orange}{90} + \color{red}{4} \\= & \color{red}{94} \end{align}\)
2. \(\begin{align} & 12 + 15\\= & \color{green}{10} + \color{red}{2} + \color{green}{10} + \color{red}{5} \\= & \color{green}{20} + \color{red}{7} \\= & \color{red}{27} \end{align}\)
3. \(\begin{align} & 88 + 6\\= & \color{green}{80} + \color{red}{8} + \color{green}{0} + \color{red}{6} \\= & \color{green}{80} + \color{red}{14} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{4} \\= & \color{orange}{90} + \color{red}{4} \\= & \color{red}{94} \end{align}\)
4. \(\begin{align} & 57 + 10\\= &10+57\\= &10 + \color{green}{50} + \color{red}{7} \\= & \color{green}{60} + \color{red}{7} \\= & \color{red}{67} \end{align}\)
5. \(\begin{align} & 24 + 32\\= & \color{green}{20} + \color{red}{4} + \color{green}{30} + \color{red}{2} \\= & \color{green}{50} + \color{red}{6} \\= & \color{red}{56} \end{align}\)
6. \(\begin{align} & 84 + 10\\= &10+84\\= &10 + \color{green}{80} + \color{red}{4} \\= & \color{green}{90} + \color{red}{4} \\= & \color{red}{94} \end{align}\)
7. \(\begin{align} & 52 + 36\\= & \color{green}{50} + \color{red}{2} + \color{green}{30} + \color{red}{6} \\= & \color{green}{80} + \color{red}{8} \\= & \color{red}{88} \end{align}\)
8. \(\begin{align} & 58 + 31\\= & \color{green}{50} + \color{red}{8} + \color{green}{30} + \color{red}{1} \\= & \color{green}{80} + \color{red}{9} \\= & \color{red}{89} \end{align}\)
9. \(\begin{align} & 63 + 28\\= & \color{green}{60} + \color{red}{3} + \color{green}{20} + \color{red}{8} \\= & \color{green}{80} + \color{red}{11} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{1} \\= & \color{orange}{90} + \color{red}{1} \\= & \color{red}{91} \end{align}\)
10. \(\begin{align} & 22 + 38\\= & \color{green}{20} + \color{red}{2} + \color{green}{30} + \color{red}{8} \\= & \color{green}{50} + \color{red}{10} \\= & \color{red}{60} \end{align}\)
11. \(\begin{align} & 14 + 57\\= & \color{green}{10} + \color{red}{4} + \color{green}{50} + \color{red}{7} \\= & \color{green}{60} + \color{red}{11} \\= & \color{green}{60} + \color{orange}{10} + \color{red}{1} \\= & \color{orange}{70} + \color{red}{1} \\= & \color{red}{71} \end{align}\)
12. \(\begin{align} & 35 + 59\\= & \color{green}{30} + \color{red}{5} + \color{green}{50} + \color{red}{9} \\= & \color{green}{80} + \color{red}{14} \\= & \color{green}{80} + \color{orange}{10} + \color{red}{4} \\= & \color{orange}{90} + \color{red}{4} \\= & \color{red}{94} \end{align}\)