Math Formulas for Grade School Learners

1. Geometry Formulas

Area of a Rectangle: A = l × w

Perimeter of a Rectangle: P = 2(l + w)

Area of a Circle: A = πr²

Circumference of a Circle: C = 2πr

Volume of a Rectangular Prism: V = l × w × h

Perimeter of a Triangle: P = a + b + c

Area of a Triangle: A = 1/2 × b × h

2. Measurement and Algebra Formulas

Distance: d = rt

Mean of Two Numbers: M = (a + b) ÷ 2

Perimeter of a Polygon: P = base + side1 + side2

Area of a Trapezoid: A = 1/2 × (b₁ + b₂) × h

Volume of a Sphere: V = 4/3 × πr³

Surface Area of a Cylinder: A = 2πrh + 2πr²

3. Conversion Formulas

1 km = 1000 m

1 m = 100 cm

1 cm = 10 mm

1 L = 1000 mL

1 kg = 1000 g

1 g = 1000 mg

1 hour = 60 minutes

1 minute = 60 seconds

4. Percentage Formulas

Percentage: (Part ÷ Whole) × 100%

Increase: [(New Value - Original Value) ÷ Original Value] × 100%

Decrease: [(Original Value - New Value) ÷ Original Value] × 100%

Convert Percentage to Decimal: Decimal = Percentage ÷ 100

Convert Decimal to Percentage: Percentage = Decimal × 100

Convert Percentage to Fraction: Fraction = Percentage ÷ 100