Class VI Mathematics
Chapter 3: Playing with Numbers
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Syllabus Sections
Key Formulas & Equations
Click Copy to duplicateDivisibility by 3 Rule
\sum \text{digits} = 3k
A number is divisible by 3 if the sum of its digits is a multiple of 3.
Related Formulas from Adjacent Chapters
Distributive Property
a(b + c) = ab + ac
[From Whole Numbers] Distributes multiplication over addition.
Successor Function
S(n) = n + 1
[From Whole Numbers] Returns the next whole number.
Circle Circumference Ratio
\frac{C}{d} = \pi
[From Basic Geometrical Ideas] Constant ratio of circle circumference to diameter.