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Represent the following rational numbers on a number line: 38,-73,22-6 - Mathematics

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प्रश्न

Represent the following rational numbers on a number line:

`3/8, (-7)/3, 22/(-6)`

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उत्तर

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अध्याय 8: Rationals Numbers - Exercise [पृष्ठ २४८]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 7
अध्याय 8 Rationals Numbers
Exercise | Q 73. | पृष्ठ २४८

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संबंधित प्रश्न

Show the following numbers on a number line. Draw a separate number line for each example.

(1)`3/2 , 5/2 , -3/2`

(2)`7/5 , (-2)/5 , (-4)/5`

(3) `(-5)/8 , 11/8`

(4)`13/10 , (-17)/10`


Show the following numbers on a number line. Draw a separate number line for the example.

`3/2 , 5/2 , -3/2`


Show the following numbers on a number line. Draw a separate number line for the example.

`7/5 , (-2)/5 , (-4)/5`


The number `sqrt2` is shown on a number line. Steps are given to show `sqrt3` on the number line using `sqrt2`. Fill in the boxes properly and complete the activity.

Activity :

  • The point Q on the number line shows the number ______.
  • A line perpendicular to the number line is drawn through the point Q. Point R is at unit distance from Q on the line.
  • Right angled ∆ORQ is obtained by drawing seg OR. 

`l  ("OQ") = sqrt2` ,    `l("QR") = 1`

`therefore` by Pythagoras theorem,

`[l("OR")]^2  = [l("OQ")]^2 + [l("QR")]^2 `

= `square^2`+ `square^2` = `square` + `square`

= `square`

∴ l(OR) = `square`

Draw an arc with centre O and radius OR. Mark the point of intersection of the line and the arc as C. The point C shows the number `sqrt3`.


Evaluate:

`4/(-9) + 1`


Draw a number line and mark 

`2/3, (-8)/3, 7/3, (-2)/3 and -2`


Draw a number line and represent the following rational numbers on it

`9/4`


Draw a number line and represent the following rational numbers on it

`15/(-4)`


The rational number `(-8)/(-3)` lies neither to the right nor to the left of zero on the number line.


Find the odd one out of the following and give reason.


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