Number system
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The document discusses squares and properties of square numbers. It defines that a number squared is when a number is multiplied by itself and is denoted with the number raised to the power of 2. For example, 3 squared is 9 and 5 squared is 25. Some key properties are that the last digit of a square number is always 0, 1, 4, 6, or 9. Numbers ending in 2, 3, 7, or 8 are not perfect squares. If a number ends in 1 or 9, its square will end in 1.
Number system
- 1. NUMBER SYSTEM SQUARES SLIDE-1 DEF:When a number is multiplied by itself we say that the number is squared. It is denoted by a number raised to the power ¡°2¡¯. e.g. 3x3=32=9 5x5=52=25 PROPERTY 1. In a square numbers, the digits at the units place are always 0,1,4,60r 9. The numbers having 2,3,7 or 8 at its units place are not perfect square numbers. 2. (i) If a number has or 9 in the units place then its square ends in 1. ii) If a number has 2 or 8