SURYAMG

NCERT Complete Mathematics Formula Sheets

Every Single Chapter & Definitive Formula Blueprint Matrix • Grades 1 to 10 Complete

Ch 1-2: Shapes, Space & Numbers 1-9
Spatial LayoutsInside, Outside, Bigger, Smaller, Top, Bottom, Nearer, Farther
Solid ShapesSpherical (Rolls), Cylindrical/Cuboid (Slides)
Number SetCount: 1, 2, 3, 4, 5, 6, 7, 8, 9
Ch 3-5: Addition, Subtraction & Numbers 10-20
Addition (+)Combining groups together. E.g., 3 + 2 = 5
Subtraction (-)Taking away elements from a group. E.g., 5 - 2 = 3
Zero PropertyX + 0 = X and X - 0 = X
Place Value10 = 1 Ten + 0 Ones; 15 = 1 Ten + 5 Ones
Ch 6-9: Time, Measurement & Data handling
Time SequencesMorning → Afternoon → Evening → Night
Measurement MetricsLength estimation via Span, Foot-print, Pace length comparisons
Weight ScalesHeavier vs Lighter elements
Ch 10-13: Patterns, Numbers 21-100 & Money
Sequence PatternIncremental skip steps and structural block shapes tracking
Currency NotesIndian coins/notes valid currency units: ₹1, ₹2, ₹5, ₹10, ₹20, ₹50
Ch 1-4: Counting in Groups & Tens
Grouping UnitsCounting pairs (2s), bundles of tens (10s)
2-Digit PartitionNumber = (Tens × 10) + Ones
Ch 5-8: Patterns, Footprints & Tens/Ones
Geometric TracesCircle (Coins), Rectangle (Boxes), Triangle (Cones)
Currency SplitBreaking double-digit integers into configurations of ₹10 notes & ₹1 coins
Ch 9-12: Time Layouts & Weight capacities
Calendar Cycle7 Days in Week, 12 Months in Year (365 Days standard)
Capacity ScaleVolume units matching relative sizing: Litres vs Millilitres
Ch 13-15: Addition & Subtraction Extensions
Carryover AddRegrouping 10 Ones into a single 1 Ten shift unit
Borrowing SubDecomposing 1 Ten into 10 structural Ones units
Ch 1-4: Where to Look From & Century Configurations
View PerspectivesTop View, Side View, Front View spatial offsets
3-Digit BaseValue = (H × 100) + (T × 10) + O
Century Bounds1 Century = 100 Runs / Units
Ch 5-8: Shapes Designs & Long/Short Metrics
Edges & CornersSquare/Rectangle = 4 Edges, 4 Corners. Circle = 0 Corners
Length Scaling1 Metre (m) = 100 Centimetres (cm)
Distance Scale1 Kilometre (km) = 1000 Metres (m)
Ch 9-11: Multiplication Loops & Volume Limits
MultiplicationRepeated addition array logic
Weight Equation1 Kilogram (kg) = 1000 Grams (g)
Volume Metrics1 Litre (L) = 1000 Millilitres (mL)
Ch 12-14: Division Frameworks & Smart Charts
Division InverseIf A × B = C, then C ÷ B = A and C ÷ A = B
Data PictogramsTracking item repeat counts via symbol icons or tally checkmarks
Ch 1-4: Building with Bricks & Metric Fields
Brick Geometry6 rectangular faces, 12 edges, 8 vertices (Cuboid layout)
Time Calculation1 Hour = 60 Mins, 1 Min = 60 Secs
24-Hour SwitchTime PM = 12-Hour Time + 12. (E.g., 4 PM = 16:00)
Ch 5-8: Way The World Looks & Circular Frameworks
Circle AnatomyCenter point, Radius, Diameter line spacing
Diameter FactorDiameter = 2 × Radius
Ch 9-11: Halves/Quarters & Tables Matrices
Fraction BlocksHalf = 1/2, Quarter = 1/4, Three-Quarters = 3/4
Whole Assembly1/4 + 1/4 + 1/4 + 1/4 = 1
Division TheoremDividend = (Divisor × Quotient) + Remainder
Ch 12-14: Smart Charts & Perimeter Bounds
Perimeter FormulaSum total boundary line path length around flat geometric arrays
Square PerimeterPerimeter = 4 × Side
Rect. PerimeterPerimeter = 2 × (Length + Breadth)
Ch 1-4: The Fish Tale, Angles & Parts/Wholes
Speed EquationSpeed = Distance / Time
Angle ClassesRight Angle = 90°, Acute Angle < 90°, Obtuse Angle > 90°
Fraction MultiFraction value of a collection = (Numerator × Total Collection) / Denominator
Ch 5-8: Rotational Symmetry & Factor Loops
Symmetry CheckMirror half reflections, 1/2 turns (180°), 1/4 turns (90°) layouts
Factors & MultiplesCommon factors matrix, Least Common Multiple matching bounds
Ch 9-11: 3D Boxes, Tenths/Hundredths & Area Scales
Net Formations2D foldable templates assembly maps into 3D structural cubes
Decimal Base1/10 = 0.1 (Tenths place), 1/100 = 0.01 (Hundredths place)
Area of RectangleArea = Length × Breadth
Area of SquareArea = Side × Side
Ch 12-14: Smart Charts & Volume Layouts
Tally SystemVertical strokes grouped with diagonal crossing lines at every 5th count element
Volume of CubeVolume = Side × Side × Side
Volume of CuboidVolume = Length × Breadth × Height
Ch 1-3: Number Systems & Operations
Large Numbers1 Lakh = 100,000; 1 Crore = 10,000,000
HCF & LCM RuleHCF(a,b) × LCM(a,b) = a × b
Divisibility 3 / 9Sum of individual digits must be divisible by 3 or 9
Divisibility 6Must pass both Divisibility by 2 (Even) and Divisibility by 3 rules
Divisibility 11|Sum of odd digits - Sum of even digits| = 0 or multiple of 11
Ch 4-7: Basic Geometry, Integers & Fractions
Polygon BasicsTriangle (3 sides), Quadrilateral (4 sides), Pentagon (5 sides)
Integers AxisNegative Integers (...) < -2 < -1 < 0 < +1 < +2 < (...)
Equivalent Frac.a / b = (a × k) / (b × k)
Ch 8-10: Decimals, Data & Mensuration
Decimal Convers.x cm = x/100 m; y g = y/1000 kg
Area of TriangleArea = 0.5 × Base × Height
Equi. Triangle Per.Perimeter = 3 × Side
Ch 11-14: Algebra Core & Ratio Proportions
Variable LogicGeneral expression tracking rules: e.g., Matchstick patterns = 2n
Ratio FormComparison layout: a : b = a / b
Proportion IdentityIf a, b, c, d are in proportion, then a × d = b × c
Unitary MethodCalculate 1 unit value first → multiply by target count
Ch 1-3: Integers, Decimals & Data Handling
Sign Matrix(-) × (-) = (+), (-) × (+) = (-), (+) × (-) = (-)
Fraction Division(a/b) ÷ (c/d) = (a/b) × (d/c)
Arithmetic MeanMean = Sum of observations / Number of observations
Data RangeRange = Maximum Value - Minimum Value
MedianMiddle value of organized datasets arranged in ascending/descending order
Ch 4-6: Simple Equations, Lines & Triangles
Angle PairsComplementary = 90°, Supplementary = 180°
Transversal CrossAlternate Interior angles match, Corresponding angles match
Triangle SumAngle A + Angle B + Angle C = 180°
Exterior AngleExterior Angle = Sum of 2 Interior Opposite Angles
Pythagoras TheoremIn a right-angled triangle: Hypotenuse² = Base² + Perpendicular²
Ch 7-9: Congruence, Quantities & Rational Numbers
Congruence TestsSSS, SAS, ASA, RHS congruence parameters
Unitary ChangeProfit% = (Profit / Cost Price) × 100
Simple InterestSI = (P × R × T) / 100
Total MaturityAmount = Principal (P) + Interest (SI)
Ch 10-15: Perimeter, Area & Exponents Matrix
Parallelogram AreaArea = Base × Height
Circle MetricsCircumference = 2πr; Area = πr²
Exponent Power 1aᵐ × aⁿ = aᵐ⁺ⁿ; aᵐ ÷ aⁿ = aᵐ⁻ⁿ
Exponent Power 2(aᵐ)ⁿ = aᵐⁿ; a⁰ = 1
Ch 1-4: Rational Algebra & Polygons Geometry
Rational AxiomsIdentity: Addition = 0, Multiplication = 1
Linear FormStandard shape configuration: ax + b = c
Polygon InteriorSum of Interior Angles = (n - 2) × 180°
Exterior SumSum of all Exterior Angles for any polygon = 360°
Parallelogram rulesOpposite sides match, opposite interior angles match, diagonals bisect
Ch 5-8: Data Handling, Squares & Cubes Roots
Pie Chart AngleCentral Sector Angle = (Component Value / Total) × 360°
ProbabilityP(E) = Outcomes / Total Samples
Pythagorean TripleConfigured via integers array: 2m, m²-1, m²+1
Ch 9-12: Quantities, Algebraic Identities & Solid Nets
Compound InterestA = P(1 + R/100)ⁿ
Identity 1 & 2(a±b)² = a² ± 2ab + b²
Identity 3a² - b² = (a - b)(a + b)
Euler's FormulaFor 3D polyhedrons: Faces (F) + Vertices (V) - Edges (E) = 2
Ch 13-16: Mensuration, Proportions & Graphs
Trapezium AreaArea = 0.5 × (a + b) × h
Rhombus AreaArea = 0.5 × d₁ × d₂
TSA CylinderSurface Area = 2πr(r + h); Volume = πr²h
Direct ProportionRatio stays constant: x / y = k
Inverse ProportionProduct stays constant: x × y = k
Ch 1-3: Number Systems, Polynomials & Coordinates
RationalizingMultiplier for denominator: 1/(√a+b) × (√a-b)/(√a-b)
Identity 4(x+a)(x+b) = x² + (a+b)x + ab
Identity 5(a+b+c)² = a²+b²+c²+2ab+2bc+2ca
Identity 6 & 7(a±b)³ = a³ ± b³ ± 3ab(a±b)
Identity 8a³+b³+c³-3abc = (a+b+c)(a²+b²+c²-ab-bc-ca)
Conditional RuleIf a + b + c = 0, then a³ + b³ + c³ = 3abc
Ch 4-7: Linear Geometry, Euclid & Triangles
Linear GraphStandard two-variable line configuration: ax + by + c = 0
Euclid AxiomThings equal to the same thing are equal to each other
Lines & AnglesVertically opposite angles match; Interior angles on same side sum to 180°
Triangle CriteriaSAS, ASA, SSS, RHS congruence, and AAS variation rules
Ch 8-11: Quadrilaterals, Circles & Heron's Formula
Quad Angle SumTotal interior sum = 360°
Mid-Point TheoremSegment joining midpoints of 2 sides is parallel to 3rd side and = 0.5 × 3rd Side
Circle AnglesAngle subtended at center = 2 × Angle subtended at any point on circumference
Heron's FormulaArea = √[s(s-a)(s-b)(s-c)] where semiperimeter s = (a+b+c)/2
Ch 12-14: Surface Areas, Volumes & Stats
Cone MetricsSlant height l = √(r² + h²); CSA = πrl; Volume = 1/3 πr²h
Sphere MetricsSurface Area = 4πr²; Volume = 4/3 πr³
Hemisphere CSACurved Surface Area = 2πr²; Total Surface Area = 3πr²
Ch 1-3: Real Numbers, Polynomials & Pairs of Lines
Fundamental Th.Composite Number = Product of Unique Prime Factors
Zeros QuadraticSum α + β = -b/a; Product α · β = c/a
Lines IntersectUnique solution if a₁/a₂ ≠ b₁/b₂
Lines ParallelNo solution if a₁/a₂ = b₁/b₂ ≠ c₁/c₂ (Inconsistent)
Lines CoincidentInfinite solutions if a₁/a₂ = b₁/b₂ = c₁/c₂ (Dependent)
Ch 4-6: Quadratic Equations, AP & Triangles Similarity
DiscriminantD = b² - 4ac (Real distinct if D > 0, Real equal if D = 0)
Quadratic RootRoots equation: x = [-b ± √D] / 2a
AP n-th Termaₙ = a + (n - 1)d
AP Term SumSₙ = (n/2)[2a + (n - 1)d] or Sₙ = (n/2)[a + l]
Thales TheoremIf DE || BC in triangle ABC, then AD/DB = AE/EC
Ch 7-9: Coordinate Geometry & Trigonometry Matrix
Distance Formulad = √[(x₂ - x₁)² + (y₂ - y₁)²]
Section FormulaInternal split: P(x,y) = ((m₁x₂ + m₂x₁)/(m₁+m₂), (m₁y₂ + m₂y₁)/(m₁+m₂))
Trig Ratiossinθ = P/H, cosθ = B/H, tanθ = P/B
Trig Identity 1sin²θ + cos²θ = 1
Trig Identity 21 + tan²θ = sec²θ
Correct Identity1 + cot²θ = cosec²θ
Ch 10-14: Circles, Sectors, Stats & Probability
Tangent LengthTangents drawn from an external point to a circle are equal in length
Sector AreaArea = (θ/360°) × πr²; Arc Length = (θ/360°) × 2πr
Mean CalculationDirect Method: Mean = Σfᵢxᵢ / Σfᵢ
Mode EquationMode = l + [(f₁ - f₀)/(2f₁ - f₀ - f₂)] × h
Median EquationMedian = l + [(n/2 - CF)/f] × h
Empirical LawCrucial link: 3 × Median = Mode + 2 × Mean