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1. \(\sqrt{ 81 + 144}\)
2. \(\sqrt{ 25 } - \sqrt{ 16 }\)
3. \(\sqrt{ 9 } + \sqrt{ 16 }\)
4. \(\sqrt{ 25 - 16}\)
5. \(\sqrt{ 100 } - \sqrt{ 64 }\)
6. \(\sqrt{ 81 } + \sqrt{ 144 }\)
7. \(\sqrt{ 36 + 64}\)
8. \(\sqrt{ 100 - 64}\)
9. \(\sqrt{ 169 } - \sqrt{ 25 }\)
10. \(\sqrt{ 25 } + \sqrt{ 144 }\)
11. \(\sqrt{ 25 - 9}\)
12. \(\sqrt{ 169 - 25}\)

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Verbetersleutel

1. \(\sqrt{ 81 + 144}=\sqrt{225} = 15\)
2. \(\sqrt{ 25 } - \sqrt{ 16 }=5-4=1\)
3. \(\sqrt{ 9 } + \sqrt{ 16 }=3+4=7\)
4. \(\sqrt{ 25 - 16}=\sqrt{9} = 3\)
5. \(\sqrt{ 100 } - \sqrt{ 64 }=10-8=2\)
6. \(\sqrt{ 81 } + \sqrt{ 144 }=9+12=21\)
7. \(\sqrt{ 36 + 64}=\sqrt{100} = 10\)
8. \(\sqrt{ 100 - 64}=\sqrt{36} = 6\)
9. \(\sqrt{ 169 } - \sqrt{ 25 }=13-5=8\)
10. \(\sqrt{ 25 } + \sqrt{ 144 }=5+12=17\)
11. \(\sqrt{ 25 - 9}=\sqrt{16} = 4\)
12. \(\sqrt{ 169 - 25}=\sqrt{144} = 12\)