Basic Maths Formulae and Important facts For Class - 6 To Class - 10
1. Which number is not represented in roman number - zero
2. Which number is even prime number--- two
3. 1 is neither prime number nor composite number.
4. The denominator of Rational number can not be zero.
5. Integer numbers are represented by Z
6. Rational numbers are represented by Q.
7. Which type of number system is used in computer system.---- Binary
8. The factor whose value always keep on changing is called variable.
9. The sum of all the interior angles of a triangle is 180.
10. Who gave Pythagoras theorem ---------- Pythagoras
11. In which type of triangle does Pythagoras theorem work.—Right angled triangle.
12. How many Pythagorean triplets are there.?.......... 3
13. The coordinate of origin is ………… (0,0)
14. X – coordinate of the point is called ……… abscissa
15. Y – coordinate of the point is called…………. Ordinate
16. The radius makes an angle of 360 at the center of the circle in a complete cycle.
17. When a person buys an object at a particular price, the price is called cost price of the object.
18. When a person sells an object at a particular price , the price is called selling price
19. When a person borrows some money from other person or a financial firm and he gives some extra money after a particular period of time is called interest.
20. The interest on the interest is called compound interest.
21. The full form of GST is goods and service tax.
22. The full form of VAT is value added tax.
23. The charge on an object which is for maintainance of the object is called Overhead
24. The total length of the boundary of any shape is called perimeter
25. The space which is occupied by an object is called area
26. The amount of matter is hold by an object is called volume.
27. Dimensions are length, breadth and height
28. 3D shape has three dimension.
29. Cube has 12 edges
30. Cuboid has 4 diagonals.
31. A line can be increased from both sides.
32. A ray can be increased from one side.
33. Line segment can not be increased
34. Circle has no vertex.
35. Diameter is the largest chord of the circle.
36. A line segment which meets two point on the circumference of the circle.
37. The value of pi is 3.14
38. Pi is irrational number.
39. Each number can be real number ( except imaginary number)
40. The hexagon has 6 sides.
41. Polygon is made up of line segments.
42. Regular polygon has equal line segments.
43. The full form of MRP is maximum retail price.
44. Discount is given on market price.
45. Profit or loss is calculated on cost price
46. When bases are same in multiplication then powers are added.
47. When bases are same in division then power are subtracted.
48. When powers are same in multiplication then bases are multiplied.
49. When powers are same in division then bases are divided and power will remain same and written one time only.
50. To make the positive power of any number, we reciprocal the base
51. The number which is multiplied with the variable is called coefficient.
52. Pentagon is a regular polygon.
53. The sum of all exterior angle of the polygon is 360
54. the sum of all interior angles of the quadrilateral is 360
55. An equilateral triangle has equal sides.
56. An isosceles triangle has two equal sides.
57. Each angle of an equilateral triangle is 60
58. The isosceles triangle has two equal angles.
59. The angle whose value is greater than 180 and less 360 is called reflex angle.
60. The point has no length and breadth.
61. The distance between parallel lines always be same.
62. The opposite angles of a parallelogram always be same.
63. The sum of adjacent angles of a parallelogram is 180
64. The rhombus has four equal sides.
65. The diagonals of the rhombus are perpendicular each other.
66. The opposite sides of rectangle are equal.
67. The square has four equal sides.
68. The Diagonals of the square are same and perpendicular eachother.
69. A trapezium has a pair of non parallel sides.
70. Zero is neither prime nor composite number.
71. The sum of two integers always be integer.
72. The product of integers always be integers
73. The division of two integers can not be integer.
74. The collection of information is called data
75. The process of handling the data is called data handling.
76. Prime number has only two factors.
77. The product of two rational numbers always be rational
78. The sum of two rational numbers always be rational.
79. The difference between maximum value and minimum value, is called range of the data.
80. The possibility to be an event is called probability.
81. The probability to be an event can be greater than 1 and less than zero.
82. Total number of outcomes of an experiment when a dice is thrown, is six.
83. When a coin is tossed, total number f outcomes of the experiment is two.
84. Perimeter of rectangle is 2(l +b).
85. Perimeter of square is 4 x side.
86. Perimeter of triangle is sum of lengths of all the sides.
87. Area of rectangle is l x b
88. Area of square is side x side.
89. Area of triangle is
x base x height.
90. Area of circle is πr2
91. Circumference ( perimeter) of circle is 2Ï€r.
92. Total surface area of cube is 6a2.
93. Lateral surface area of cube is 4a2.
94. Volume of cube is a3
95. Total surface area of cuboid is 2(lb + bh + hl)
96. Lateral surface area of cuboid is 2(l + b) x h or perimeter x height.
97. Volume of cuboid is l x b x h.
98. Area of trapezium is
x ( sum of parallel sides ) x height.
99. Area of rhombus is
100.Curved surface area of cylinder is 2Ï€rh.
101.Total surface area of cylinder is 2Ï€r( r + h).
102.Volume of cylinder is πr2h.
103.Surface area of sphere is 4Ï€r2
104.Volume of sphere is
Ï€r3
105.Profit = SP – CP
106.Loss = CP – SP
107.SI =
108.The sum of supplementary angles is 180
109.The sum of complementary angles is 90
110.The value of reflex angle is greater than 180 and less than 360.
111.An equilateral triangle has equal sides.
112.Each angle of equilateral triangle is 60
113.There are 52 cards in the deck.
114.The coordinate of origin is (0,0)
115.The lines of symmetry of circle cab be drawn infinitely.
116.Axes always be perpendicular to each other.
117.The distance between two parallel lines always be equal.
118.The diagonals of rhombus are perpendicular to each other.
119.The degree of linear equation is 1.
120.The sum of opposite angles of cyclic quadrilateral is 1800.
121.The full of form of CPCT is corresponding parts of congruence triangle.
122.The rational numbers between two rational numbers are infinite.
123.The decimal expansion of irrational number is non termination and non repeating.
124.The decimal expansion of rational number is terminating and non terminating and repeating.
125. The x coordinate of a point is called abscissa and y coordinate of a point is called ordinate.
126. 1729 is called Ramunujan
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