Class-8th Maths Ncert Solution.
Solution of every chapter, every exercise even with examples and try these corners.
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Ch-1, (Rational Numbers)
Conditions of rational numbers, Properties of rational numbers, Closure property, Commutativity, Associativity, Distributive property, The role of zero, The role of one, Negative of a number, Reciprocal, Additive inverse, Multiplicative inverse, Additive identity, Multiplicative inverse, Representation of rational numbers on a number line, Rational numbers between two rational numbers.
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Ch-2, (Linear Equation in one variable)
Algebraic equation and expression, Solving an equation, Applications of Linear equations, Solving equations having the variable on the both sides, Word based problems, Reducing equations to simpler form, Equation reducible to the linear form.
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Ch-3, (Understanding Quadrilaterals)
Polygons, Classification of polygons, Diagonals, Convex and concave polygon, Regular and irregular polygon, Angle sum property, Sum of exterior angles, Kind of quadrilaterals, Trapezium, Kite, Parallelogram, Rhombus, Rectangle, Square.
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Ch-4, (Practical Geometry)
Constructing a quadrilateral, When the lengths of four sides ang a diagonal are given, When two diagonals and three sides are given, When two adjacent sides and three angles are known, When three sides and two included angles are given, Other special cases.
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Ch-5, (Data Handling)
Looking for information, Organising data, Grouping data, Bar graphs, Pie chart or circle graph, Chance and probability.
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Ch-6, (Square and Square Roots)
Squares, Properties of square numbers, Intresting patterns of square, Pythagorean triplet, Square roots, Finding square root through reapeted subtraction, Through prime factorisation, Through Division method, Square roots of decimal numbers, Estimating square root.
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Ch-7, (Cubes and Cube Roots)
Cubes, Cubes through prime factorisation, Cube root of a number.
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Ch-8, (Comparing Quantities)
Recalling ratio and percentage, Finding increase or decrease percent Finding discount, Cost price CP, Selling price SP, Loss and profit, Loss percentage, Profit percentage, Sales tax, VAT, Goods and service tax, Compound interest, Deducing a formula for compound interest, Rate compound annually and half yearly, Application of compound interest formula.
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Ch-9, (Algebraic Expression and Identities)
Understanding expression, Terms factors and coefficient, Monomial binomial and polynomial, Like and unlike terms, Addition and subtracting of algebraic expressions, Multiplication of expressions, Multiply monomial to a monomial, Monomial to binomial, Multiplying a monomial by a polynomial, Multiply a polynomial to a polynomial, Standard Identities, Applying Identities.
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Ch-10, (Visualising Solid Shapes)
View of 3D shapes, Top view, Front view, Side view, Mapping space around us, Faces edges and vertices.
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Ch-11, (Mensuration)
Area of various shapes, Area of trapezium, Area of general quadrilaterals, Area of a polygon, Solid shapes, Surface area of cube cuboid and cylinder, Volume of cube cuboid and cylinder.
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Ch-12, (Exponents and Powers)
Exponents, Powers with negative exponents, Laws of exponents, Use of exponents to express small numbers in standard form, Compare very large and very small numbers.
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Ch-13, (Direct and Inverse Proportion)
Direct proportion, Inverse proportion.
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Ch-14, (Factorisation)
Factors and natural numbers, Factors of algebraic expression, What is factorisation, Method of common factor, Factorisation by regrouping terms, Factorisation using identities, Factors of the form (x+a)(x+b), Division of algebraic expression, Find the errors.
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Ch-15, (Introduction to Graphs)
A bar graph, A pie graph or circle graph, A line graph, Linear graphs, Location of a point, Coordinates, Some other applications.
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Ch-16, (Playing with numbers)
Numbers in general forms, Games with numbers, Letter for digits, Tests of divisibility, Divisibility rules for 2,3,4,5,6,7,8,9,10 and 11 etc.
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