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1. \(\sqrt{18}\)
2. \(\sqrt{605}\)
3. \(\sqrt{864}\)
4. \(\sqrt{300}\)
5. \(\sqrt{900}\)
6. \(\sqrt{1600}\)
7. \(\sqrt{147}\)
8. \(\sqrt{400}\)
9. \(\sqrt{324}\)
10. \(\sqrt{726}\)
11. \(\sqrt{128}\)
12. \(\sqrt{245}\)

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Verbetersleutel

1. \(\sqrt{18}=\sqrt{9 \cdot 2}=\sqrt{9}\cdot \sqrt{2}=3\sqrt{2}\)
2. \(\sqrt{605}=\sqrt{121 \cdot 5}=\sqrt{121}\cdot \sqrt{5}=11\sqrt{5}\)
3. \(\sqrt{864}=\sqrt{144 \cdot 6}=\sqrt{144}\cdot \sqrt{6}=12\sqrt{6}\)
4. \(\sqrt{300}=\sqrt{100 \cdot 3}=\sqrt{100}\cdot \sqrt{3}=10\sqrt{3}\)
5. \(\sqrt{900}=\sqrt{9 \cdot 100}=\sqrt{9} \cdot \sqrt{100}=3 \cdot 10=30\)
6. \(\sqrt{1600}=\sqrt{16 \cdot 100}=\sqrt{16} \cdot \sqrt{100}=4 \cdot 10=40\)
7. \(\sqrt{147}=\sqrt{49 \cdot 3}=\sqrt{49}\cdot \sqrt{3}=7\sqrt{3}\)
8. \(\sqrt{400}=20\)
9. \(\sqrt{324}=18\)
10. \(\sqrt{726}=\sqrt{121 \cdot 6}=\sqrt{121}\cdot \sqrt{6}=11\sqrt{6}\)
11. \(\sqrt{128}=\sqrt{64 \cdot 2}=\sqrt{64}\cdot \sqrt{2}=8\sqrt{2}\)
12. \(\sqrt{245}=\sqrt{49 \cdot 5}=\sqrt{49}\cdot \sqrt{5}=7\sqrt{5}\)