PUMPA - SMART LEARNING

எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்

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A rational number is one that can be written as the ratio of two integers.
Example:
i) 6 = 12/2.
 
ii) 9 = 27/3.
 
iii) 4 = 16/4.
A number line is a way to visualize numbers by placing them along a line that shows their relative sizes.
YCIND_220923_4496_B3.png
 
Order to represent the rational number on the number line:
  • We draw a line and mark a point O on it to represent the rational number 0.
  • The positive rational numbers will be represented on the number line to the right side of O.
  • The negative rational numbers will be represented on the number line to the left side of O.
  • If we mark a point A on the line to the right of O to represent 1, then OA = 1 unit.
  • Similarly, if we choose a point A' on the line to the left of O to represent -1 then OA' = -1 unit.
YCIND_220923_4496_B2.png
 
Now, we are going to represent the rational number 1/2 on the number line.
 
For this, we divide the segment OA into equal parts. Let P be the midpoint of segment OA. Then, OP = PA = 1/2 and also we divide the segment OA' into equal parts. In this P' be the midpoint of segment OA', then OP'= P'A = -1/2.
 
YCIND_220923_4496_B4.png