Brug Mix (reeks 1)

Hoofdmenu Eentje per keer  🖨

Reken uit

1. \(37 + 41 = \ldots\)
2. \(26 + 70 = \ldots\)
3. \(26 + 41 = \ldots\)
4. \(25 + 10 = \ldots\)
5. \(36 + 50 = \ldots\)
6. \(21 + 53 = \ldots\)
7. \(53 + 22 = \ldots\)
8. \(45 + 54 = \ldots\)
9. \(51 + 12 = \ldots\)
10. \(59 + 10 = \ldots\)
11. \(13 + 80 = \ldots\)
12. \(34 + 32 = \ldots\)

---

Reken uit

Verbetersleutel

1. \(\begin{align} & 37 + 41\\= & \color{green}{30} + \color{red}{7} + \color{green}{40} + \color{red}{1} \\= & \color{green}{70} + \color{red}{8} \\= & \color{red}{78} \end{align}\)
2. \(\begin{align} & 26 + 70\\= &70+26\\= &70 + \color{green}{20} + \color{red}{6} \\= & \color{green}{90} + \color{red}{6} \\= & \color{red}{96} \end{align}\)
3. \(\begin{align} & 26 + 41\\= & \color{green}{20} + \color{red}{6} + \color{green}{40} + \color{red}{1} \\= & \color{green}{60} + \color{red}{7} \\= & \color{red}{67} \end{align}\)
4. \(\begin{align} & 25 + 10\\= &10+25\\= &10 + \color{green}{20} + \color{red}{5} \\= & \color{green}{30} + \color{red}{5} \\= & \color{red}{35} \end{align}\)
5. \(\begin{align} & 36 + 50\\= &50+36\\= &50 + \color{green}{30} + \color{red}{6} \\= & \color{green}{80} + \color{red}{6} \\= & \color{red}{86} \end{align}\)
6. \(\begin{align} & 21 + 53\\= & \color{green}{20} + \color{red}{1} + \color{green}{50} + \color{red}{3} \\= & \color{green}{70} + \color{red}{4} \\= & \color{red}{74} \end{align}\)
7. \(\begin{align} & 53 + 22\\= & \color{green}{50} + \color{red}{3} + \color{green}{20} + \color{red}{2} \\= & \color{green}{70} + \color{red}{5} \\= & \color{red}{75} \end{align}\)
8. \(\begin{align} & 45 + 54\\= & \color{green}{40} + \color{red}{5} + \color{green}{50} + \color{red}{4} \\= & \color{green}{90} + \color{red}{9} \\= & \color{red}{99} \end{align}\)
9. \(\begin{align} & 51 + 12\\= & \color{green}{50} + \color{red}{1} + \color{green}{10} + \color{red}{2} \\= & \color{green}{60} + \color{red}{3} \\= & \color{red}{63} \end{align}\)
10. \(\begin{align} & 59 + 10\\= &10+59\\= &10 + \color{green}{50} + \color{red}{9} \\= & \color{green}{60} + \color{red}{9} \\= & \color{red}{69} \end{align}\)
11. \(\begin{align} & 13 + 80\\= &80+13\\= &80 + \color{green}{10} + \color{red}{3} \\= & \color{green}{90} + \color{red}{3} \\= & \color{red}{93} \end{align}\)
12. \(\begin{align} & 34 + 32\\= & \color{green}{30} + \color{red}{4} + \color{green}{30} + \color{red}{2} \\= & \color{green}{60} + \color{red}{6} \\= & \color{red}{66} \end{align}\)