Preguntas matematicas en ingles grado octavo

Preguntas para el grado octavo..
1. The platelmintos or flatworms are an edge of spineless animals that you/they reach a maximum longitude of 60 cm. One of them decides to look for theirfood that is at a distance of 6.8 mm. If he/she moved in a horizontal way a distance medina in millimeters (mm) that can obtain when simplifying the arithmetic expression we can affirm:

2.If an athlete walks during a week in the following way: on Monday the algebraic expression walked 4m - 2n + 8, on Wednesday it continues advancing and the double of the day walks Monday, onFriday the double of Wednesday walks and on Sunday he/she walks half of the adds of the days Wednesday and Friday. Which is the journey during the week?

3. Un bote consume 7.5 galones degasolina en 2.5 horas. Si se utiliza desde las 1: 30 p.m. hasta las 6:15 p.m. ¿Cuál es el costo del combustible si cada galón cuesta $ 6267?


4. El área naranjada en las figuras es laexpresión algebraica: Siendo el diámetro 2r



Preguntas para el grado noveno..

1. When going to my father's property I could observe different animals: Ilike the rabbits and doves, but it was me almost impossible to count them: my father told me: in total I have 120 animals and if we added their paws they will give me 340: you should solve theproblems and you will know how many animals of each species I have:

2. , but of H that has a longitude of 12m. Which will the numeric value of the diameter of the circumference be?3. Juan le dice a su amigo Nicolás que si quiere saber mi capital debes resolver la siguiente ecuación: Si al cuádruplo de un numero le sumas U$ 12.000 el resultado es U$ 36.000 ¿Cuál seráel capital de Juan?

4. Si la altura de un árbol es 2/3 de su sombra que proyecta que se obtiene al resolver la expresión algebraica 3m - 6n + 36, siendo m = -2 n = 5m: cual será: