1. Your brother traveled 117 miles in 2.25 hours to come home for school break. What's the average speed that he was traveling?

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

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.

A tree grows to a height of 32.4 metres over period of \( 8 \frac{1}{2} \) years. What is the average annual growth rate in metres per year?

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