\( \begin{array}{ll}\text { A) } 28.3+4.98+3.7= & \text { H) } 459 \times 103= \\ \text { B) } 47.698+79.489= & \text { 1) } 349 \times 65= \\ \text { C) } 2.99+0.06+78+16.9= & \text { J) } 64.18 \times 7= \\ \text { D) } 948-329= & \text { K) } 1.232+4= \\ \text { E) } 8.270-136= & \text { L) } 36.108+12= \\ \text { F) } 975-88.15= & \text { M) } 8.5-4= \\ \text { G) } 148.64-29= & \text { N) } 123.5+5=\end{array} \)

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

A train leaves New Delhi at 1915 hours and arrives Mathura at 2205 hours. The distance between two stations is 144 km . Find the speed of the train.

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.