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Problemas 10
EduBook Organización
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Lucía se ha comprado tres libros por 18,50 €, 12,33 € y 16,95 €, respectivamente. ¿A cuánto asciende la compra si le descuentan 4,78 €? La compra asciende a €. ¿Cuánto le deben devolver…
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Instrumentos y errores 5
EduBook Organización
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Al medir una distancia de 120 cm se incurre en un error de 3 cm. ¿Cuál es el error relativo cometido al medir? El error relativo es de cm.
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Medida de ángulos, operaciones 23
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Calcula cuánto miden los ángulos restantes de esta figura: Los ángulos obtusos miden º. Los ángulos agudos miden º.
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Área de un sector circular 2
EduBook Organización
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Calcula el área de los sectores circulares siguientes, aproximando el resultado a las centésimas mediante redondeo. Considera π = 3,14.
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Check. The revolution of the Earth
EduBook Organización
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Use what you have learnt in this section to answer the questions: What are leap years? How often do leap years happen? What causes the change in seasons? What season is it when both the northern and…
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3. Self-evaluation - The representation of the Earth: maps
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Choose the correct answer for each question: What is the most accurate way of representing the Earth? How are maps insufficient as representations of the Earth? What do the initials GPS stand for? What…
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Self-evaluation 2 - Rivers and seas
EduBook Organización
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Complete the following sentences on water in nature: Most of the planet's water is and it is found in and . The Earth's fresh water is found in lakes and , in the humidity of the ground, in…
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Self-evaluation 1 - Weather and climate
EduBook Organización
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Complete the text with the missing words: Atmospheric phenomena (temperature, humidity, , atmospheric pressure and exist in the lower part of the atmosphere, in the area known as the . The refers to the…
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Match. Natural hazards (2)
EduBook Organización
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Match these natural hazards with the most direct effects that they usually cause: hurricane flood earthquake volcanic eruption tsunami