Rekenen met wortels (reeks 2)

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1. \(\sqrt{1,21}\)
2. \(\sqrt{0,0004}\)
3. \(\sqrt{0,64}\)
4. \(\sqrt{1,69}\)
5. \(\sqrt{0,0196}\)
6. \(\sqrt{0,09}\)
7. \(\sqrt{0,0289}\)
8. \(\sqrt{0,16}\)
9. \(\sqrt{0,0225}\)
10. \(\sqrt{0,0324}\)
11. \(\sqrt{0,81}\)
12. \(\sqrt{0,0064}\)

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Verbetersleutel

1. \(\sqrt{1,21}=\sqrt{\frac{121 }{ 100}}=\frac{\sqrt{121}}{\sqrt{100}}=\frac{11}{10}=\frac{11}{10}\)
2. \(\sqrt{0,0004}=\sqrt{\frac{4 }{ 10000}}=\frac{\sqrt{4}}{\sqrt{10000}}=\frac{2}{100}=\frac{1}{50}\)
3. \(\sqrt{0,64}=\sqrt{\frac{64 }{ 100}}=\frac{\sqrt{64}}{\sqrt{100}}=\frac{8}{10}=\frac{4}{5}\)
4. \(\sqrt{1,69}=\sqrt{\frac{169 }{ 100}}=\frac{\sqrt{169}}{\sqrt{100}}=\frac{13}{10}=\frac{13}{10}\)
5. \(\sqrt{0,0196}=\sqrt{\frac{196 }{ 10000}}=\frac{\sqrt{196}}{\sqrt{10000}}=\frac{14}{100}=\frac{7}{50}\)
6. \(\sqrt{0,09}=\sqrt{\frac{9 }{ 100}}=\frac{\sqrt{9}}{\sqrt{100}}=\frac{3}{10}=\frac{3}{10}\)
7. \(\sqrt{0,0289}=\sqrt{\frac{289 }{ 10000}}=\frac{\sqrt{289}}{\sqrt{10000}}=\frac{17}{100}=\frac{17}{100}\)
8. \(\sqrt{0,16}=\sqrt{\frac{16 }{ 100}}=\frac{\sqrt{16}}{\sqrt{100}}=\frac{4}{10}=\frac{2}{5}\)
9. \(\sqrt{0,0225}=\sqrt{\frac{225 }{ 10000}}=\frac{\sqrt{225}}{\sqrt{10000}}=\frac{15}{100}=\frac{3}{20}\)
10. \(\sqrt{0,0324}=\sqrt{\frac{324 }{ 10000}}=\frac{\sqrt{324}}{\sqrt{10000}}=\frac{18}{100}=\frac{9}{50}\)
11. \(\sqrt{0,81}=\sqrt{\frac{81 }{ 100}}=\frac{\sqrt{81}}{\sqrt{100}}=\frac{9}{10}=\frac{9}{10}\)
12. \(\sqrt{0,0064}=\sqrt{\frac{64 }{ 10000}}=\frac{\sqrt{64}}{\sqrt{10000}}=\frac{8}{100}=\frac{2}{25}\)