Square Numbers

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Practice Work:

1. What is 10 squared?
     a) 20.  b) 100.  c) 200

2.  Which of the following is a square of 9?
      a) 81.  b) 3.   c) both of them

3. 11 multiplied by 11 is.....
      a) 11    b) 22.    c) 121

4. Which of the number has a square equal
        to itself.
      a) 1.    b) 2.    c) 3

5. RAM is thinking about a square number between
     2 and 50, which is also an odd number and factors
     of 50. What is that number ?
      a) 1.    b) 5.   c) 25