Volgorde van bewerkingen (gevorderd)

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1. \((-12).(-13)+3\)
2. \(5-\sqrt{1321-8.12^2}\)
3. \(2-\sqrt{136-2.6^2}\)
4. \(-12.10^2+16\)
5. \(5+8.9^2-5\)
6. \(12-6:2+7\)
7. \(-12.7^2+8\)
8. \(9+4.(3^2-7)\)
9. \(\left(-\dfrac{5}{2}\cdot\dfrac{8}{35}-\dfrac{1}{7}\right)^2\)
10. \(19+5-9.(-3)\)
11. \(8-\sqrt{505-6.8^2}\)
12. \(5-\sqrt{1264-6.12^2}\)

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Verbetersleutel

1. \((-12).(-13)+3=156+3=159\)
2. \(5-\sqrt{1321-8.12^2}=5-\sqrt{1321-8.144}=5-\sqrt{1321-1152}=5-\sqrt{169}=5-13=-8\)
3. \(2-\sqrt{136-2.6^2}=2-\sqrt{136-2.36}=2-\sqrt{136-72}=2-\sqrt{64}=2-8=-6\)
4. \(-12.10^2+16=-12.100+16=-1200+16=-1184\)
5. \(5+8.9^2-5=5+8.81-5=5+648-5=648\)
6. \(12-6:2+7=12-3+7=16\)
7. \(-12.7^2+8=-12.49+8=-588+8=-580\)
8. \(9+4.(3^2-7)=9+4.(9-7)=9+4.(2)=9+8=17\)
9. \(\left(-\dfrac{5}{2}\cdot\dfrac{8}{35}-\dfrac{1}{7}\right)^2= \left(-\dfrac{5.8}{2.35}-\dfrac{1}{7}\right)^2= \left(-\dfrac{4}{7}-\dfrac{1}{7}\right)^2= \left(-\dfrac{4}{7}-\dfrac{1}{7}\right)^2= \left(\dfrac{-5}{7}\right)^2= \dfrac{25}{49}\)
10. \(19+5-9.(-3)=19+5+27=51\)
11. \(8-\sqrt{505-6.8^2}=8-\sqrt{505-6.64}=8-\sqrt{505-384}=8-\sqrt{121}=8-11=-3\)
12. \(5-\sqrt{1264-6.12^2}=5-\sqrt{1264-6.144}=5-\sqrt{1264-864}=5-\sqrt{400}=5-20=-15\)