Rekenen met wortels (reeks 2)

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1. \(\sqrt{0{,}09}\)
2. \(\sqrt{0{,}49}\)
3. \(\sqrt{0{,}0016}\)
4. \(\sqrt{0{,}0324}\)
5. \(\sqrt{0{,}36}\)
6. \(\sqrt{2{,}25}\)
7. \(\sqrt{0{,}0049}\)
8. \(\sqrt{3{,}24}\)
9. \(\sqrt{2{,}56}\)
10. \(\sqrt{0{,}0121}\)
11. \(\sqrt{0{,}25}\)
12. \(\sqrt{3{,}61}\)

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Verbetersleutel

1. \(\sqrt{0{,}09}=\sqrt{\frac{9 }{ 100}}=\frac{\sqrt{9}}{\sqrt{100}}=\frac{3}{10}=\frac{3}{10}\)
2. \(\sqrt{0{,}49}=\sqrt{\frac{49 }{ 100}}=\frac{\sqrt{49}}{\sqrt{100}}=\frac{7}{10}=\frac{7}{10}\)
3. \(\sqrt{0{,}0016}=\sqrt{\frac{16 }{ 10000}}=\frac{\sqrt{16}}{\sqrt{10000}}=\frac{4}{100}=\frac{1}{25}\)
4. \(\sqrt{0{,}0324}=\sqrt{\frac{324 }{ 10000}}=\frac{\sqrt{324}}{\sqrt{10000}}=\frac{18}{100}=\frac{9}{50}\)
5. \(\sqrt{0{,}36}=\sqrt{\frac{36 }{ 100}}=\frac{\sqrt{36}}{\sqrt{100}}=\frac{6}{10}=\frac{3}{5}\)
6. \(\sqrt{2{,}25}=\sqrt{\frac{225 }{ 100}}=\frac{\sqrt{225}}{\sqrt{100}}=\frac{15}{10}=\frac{3}{2}\)
7. \(\sqrt{0{,}0049}=\sqrt{\frac{49 }{ 10000}}=\frac{\sqrt{49}}{\sqrt{10000}}=\frac{7}{100}=\frac{7}{100}\)
8. \(\sqrt{3{,}24}=\sqrt{\frac{324 }{ 100}}=\frac{\sqrt{324}}{\sqrt{100}}=\frac{18}{10}=\frac{9}{5}\)
9. \(\sqrt{2{,}56}=\sqrt{\frac{256 }{ 100}}=\frac{\sqrt{256}}{\sqrt{100}}=\frac{16}{10}=\frac{8}{5}\)
10. \(\sqrt{0{,}0121}=\sqrt{\frac{121 }{ 10000}}=\frac{\sqrt{121}}{\sqrt{10000}}=\frac{11}{100}=\frac{11}{100}\)
11. \(\sqrt{0{,}25}=\sqrt{\frac{25 }{ 100}}=\frac{\sqrt{25}}{\sqrt{100}}=\frac{5}{10}=\frac{1}{2}\)
12. \(\sqrt{3{,}61}=\sqrt{\frac{361 }{ 100}}=\frac{\sqrt{361}}{\sqrt{100}}=\frac{19}{10}=\frac{19}{10}\)