Brug met tienvoud

Hoofdmenu Eentje per keer  🖨

Reken uit

1. \(30 + 24 = \ldots\)
2. \(60 + 19 = \ldots\)
3. \(44 + 20 = \ldots\)
4. \(20 + 37 = \ldots\)
5. \(93 + 0 = \ldots\)
6. \(12 + 60 = \ldots\)
7. \(60 + 31 = \ldots\)
8. \(40 + 19 = \ldots\)
9. \(30 + 46 = \ldots\)
10. \(82 + 10 = \ldots\)
11. \(17 + 10 = \ldots\)
12. \(36 + 20 = \ldots\)

---

Reken uit

Verbetersleutel

1. \(\begin{align} & 30 + 24 \\= & 30 + \color{green}{20} + \color{red}{4} \\ = & \color{green}{50} + \color{red}{4} \\ = & \color{red}{54} \end{align}\)
2. \(\begin{align} & 60 + 19 \\= & 60 + \color{green}{10} + \color{red}{9} \\ = & \color{green}{70} + \color{red}{9} \\ = & \color{red}{79} \end{align}\)
3. \(\begin{align} & 44 + 20 \\ = & 20 + 44 \\= & 20 + \color{green}{40} + \color{red}{4} \\ = & \color{green}{60} + \color{red}{4} \\ = & \color{red}{64} \end{align}\)
4. \(\begin{align} & 20 + 37 \\= & 20 + \color{green}{30} + \color{red}{7} \\ = & \color{green}{50} + \color{red}{7} \\ = & \color{red}{57} \end{align}\)
5. \(\begin{align} & 93 + 0 \\ = & 0 + 93 \\= & 0 + \color{green}{90} + \color{red}{3} \\ = & \color{green}{90} + \color{red}{3} \\ = & \color{red}{93} \end{align}\)
6. \(\begin{align} & 12 + 60 \\ = & 60 + 12 \\= & 60 + \color{green}{10} + \color{red}{2} \\ = & \color{green}{70} + \color{red}{2} \\ = & \color{red}{72} \end{align}\)
7. \(\begin{align} & 60 + 31 \\= & 60 + \color{green}{30} + \color{red}{1} \\ = & \color{green}{90} + \color{red}{1} \\ = & \color{red}{91} \end{align}\)
8. \(\begin{align} & 40 + 19 \\= & 40 + \color{green}{10} + \color{red}{9} \\ = & \color{green}{50} + \color{red}{9} \\ = & \color{red}{59} \end{align}\)
9. \(\begin{align} & 30 + 46 \\= & 30 + \color{green}{40} + \color{red}{6} \\ = & \color{green}{70} + \color{red}{6} \\ = & \color{red}{76} \end{align}\)
10. \(\begin{align} & 82 + 10 \\ = & 10 + 82 \\= & 10 + \color{green}{80} + \color{red}{2} \\ = & \color{green}{90} + \color{red}{2} \\ = & \color{red}{92} \end{align}\)
11. \(\begin{align} & 17 + 10 \\ = & 10 + 17 \\= & 10 + \color{green}{10} + \color{red}{7} \\ = & \color{green}{20} + \color{red}{7} \\ = & \color{red}{27} \end{align}\)
12. \(\begin{align} & 36 + 20 \\ = & 20 + 36 \\= & 20 + \color{green}{30} + \color{red}{6} \\ = & \color{green}{50} + \color{red}{6} \\ = & \color{red}{56} \end{align}\)