9. What is the cost of half a dozen pencils if one pencil costs Rs. 2.00 ?

Evaluate the absolute value of \( -8 \).

A car travels 600 km on a journey and covers this distance in 6 hours and 15 minutes. Calculate the average speed per hour.

b) Let's take a number 260 . (i) Find the square root of 260 by division method. (ii) What is the remainder left in this process? (iii) Subtract the remainder from 260 . Is the difference a perfect square? Section - B

7. \( \frac{2}{3}, \frac{1}{4} \) and \( \frac{1}{6} \) are three given rational numbers. Answer the following questions, a) List out the terminating and non-terminating recurring decimals of these rational numbers. b) What is the multiplicative identify of \( \frac{2}{3} \) ? c) Use the given rational numbers to verify the associative properties of addition and multiplication of rational numbers.

Знайди значення виразу зручним способом: \( \begin{array}{ll}\text { 1) }(7895+5149)-4895 ; & \text { 2) }(227+959)-759 ; \\ \text { 3) } 5797-(4797+270) ; & \text { 4) } 1541-(150+541) .\end{array} \)