Test 1. What will be the unit digit of the squares of the following numbers? (1) 81 (ii) 799 (iii) 1234 (iv) 26387 (v) 526 2. The following numbers are obviously not perfect squares. Give reason. (ii) 23453 (iii) 7928 (iv) 222222 (v) 64000 3. The squares of which of the following would be odd numbers? (1) 456 , 345 4. Without adding, find the sum. 1+3+5+7+9+11+13+15+17+19 5. Express 121 as the sum of 11 odd numbers. 6 How many numbers lie between squares of the following numbers? G) 25 and 26. 7. Find the square of the following numbers. (1) 32 (ii) 35 8. Write a Pythagorean triplet whose one member is. (1) 6 (ii) 14 9. Find the square roots of the following numbers by the Prime Factorisation Method. (1) 729 (ii) 400 10 For each of the following numbers, find the smallest whole number by which it should be multiplied so as to get a perfect square number. Also find the square root of the square number so obtained. (1) 252 (ii) 18 11. For each of the following numbers, find th...
