Mathematics - Number Sense - Place Value - Hundreds place value - Hundreds Place Explained
5 steps: (1) Review: 45 = 4 tens + 5 ones. (2) Introduce: 245 has THREE digits - a new column! The 2 means 2 HUNDREDS (2 groups of 100). (3) Show expanded form: 245 = 200 + 40 + 5. (4) Practice reading: show 361 → 'three hundred sixty-one' = 300 + 60 + 1. (5) Special cases: 407 has 0 tens (four hund