Maths Formulas for Class 6th:

1. Basic Arithmetic Formulas:
- Addition: a + b = c
- Subtraction: a - b = c
- Multiplication: a x b = c
- Division: a ÷ b = c

2. Geometry Formulas:
- Perimeter of a rectangle: 2(l + b)
- Area of a rectangle: l x b
- Circumference of a circle: 2πr
- Area of a circle: πr^2
- Perimeter of a triangle: a + b + c
- Area of a triangle: 1/2 x base x height

3. Fraction Formulas:
- Addition of fractions: (a/b) + (c/d) = (ad + bc) / bd
- Subtraction of fractions: (a/b) - (c/d) = (ad - bc) / bd
- Multiplication of fractions: (a/b) x (c/d) = ac / bd
- Division of fractions: (a/b) ÷ (c/d) = ad / bc

4. Decimal Formulas:
- Addition of decimals: a.b + c.d = e.f
- Subtraction of decimals: a.b - c.d = e.f
- Multiplication of decimals: a.b x c.d = e.f
- Division of decimals: a.b ÷ c.d = e.f

5. Algebraic Formulas:
- Simplifying expressions: 3a + 2b - 4a = b - a
- Solving equations: 2x + 5 = 11, x = 3
These formulas are essential for Class 6 students to understand and apply in various mathematical problems. Regular practice and understanding of these formulas will help students excel in their math studies.