Estimate \( 81.624-64.48 \) by first rounding each number to the nearest whole number.

Convert he following tractions to decimals: a. \( \frac{2}{5}=\square \) c. \( \frac{7}{8}=\square \) c. \( \frac{3}{5}=\square \) \( \frac{21}{40}=\square \)

Factorize: \( \begin{array}{lll}\text { (a) } a^{2}+12 a+36 & \text { (b) } y^{2}+14 y+49 & \text { (c) } p^{2}+22 p+121 \\ \text { (d) } 4 a^{2}+20 a+25 & \text { (e) } 9 r^{2}+60 \mathrm{r}+100 & \text { (f) } 36 x^{2}+84 x+49 \\ \text { (g) } x^{2}-8 x+16 & \text { (h) } a^{2}-18 a+81 & \text { (i) } p^{2}-26 p+169\end{array} \)

ana prensa hidravica tienedos alindros cuyo adios son de 10 cm y 24 em , Respectivament sobre el embolo de menor area se ejerce na fuerza. de 30 N ¿cual es la fuerza ave erce la prensa hidiavlica sobre el mbolo de mayor area? Haga una llustra

Ordena en tu cuaderno las sílabas para formar nombres de tipos de lluvias. Escribe una oración con cada uno. a-ro-gua-ce

I1. Solve the following problems. Without solurion is considered wrong. 2 points each. 11. The area of a triangular garden is \( 1530 \mathrm{dm}^{2} \) and the base is 45 dm . Find the measure of its altitude. 12. The \( \triangle A B C \) is an isosceles triangle, \( \overline{A B} \cong \overline{B C} \) and point \( D \) is the median point of \( \overline{A C} \). What is the measure of \( \overline{A D} \) if the perimeter of \( \triangle A B C \) is 330 m and the half measure of \( \overline{B C} \) is 61.5 m ? what is the \( m \angle G \) ? 14. What is the perimeter of an equilateral triangle whose the measure of a side is 4.7 decameters? Express the perimeter in millimeters. 15. Find the area of a triangle whose the base and height are 2.3 dm and 45 cm . Express the area in meters.