Playing with Numbers (Puzzles)

Number puzzles use place value, patterns, and logic to solve interesting problems.

They help students think carefully instead of guessing.

This topic connects arithmetic with algebra, divisibility, systematic listing, and coding ideas.

Many number puzzles are based on place value. A tw$o-d$igit number with tens digit a and ones digit b is 10$a + b$.

A thre$e-d$igit number with hundreds digit a, tens digit b, and ones digit c is 100$a + 10$$b + c$.

Systematic listing helps when there are only a few possible digits or choices.