Compute the squares of these numbers. i) 49 ii) 98 iii) `7 3/4` iv) `9 .25`

Find the square roots of the complex number (3+4i)

Find the square root of the complex number -7-24i .

Find all the factors of the numbers below: i) 242 ii) 225 iii) 400 iv) 1000

Find all factors of the numbers below. i) 256 ii) 625 iii) 243 iv) 121

Find the number of factors of each of these numbers. i)500 Ii) 600 III) 700 Iv) 800 v). 900

Find the distance between each pair of numbers given below on the number line. (i) 4,6 (ii) 3,-2 (iii) -5,-8 (iv) 3/4,-5/6

Write the decimal forms of the given fractions (i) 1/25 (ii) 1/625 (iii) 3/20 (iv) 4/20

State the number of significant figures in the following nựmbers. i. 62.4 ii. 0.0405 iii. 8.8674 iv. 50.0