K-5 friendly lesson
One small step at a time.Read the idea, try the activity, and celebrate each win as you go.
Convert between standard and expanded form
Expanded form shows how a number is built from place values. Standard form puts it back together.
Do this: Read the concept below, then try the quiz or activity.
Lesson 3 of 220
Concept
Standard form is the normal way: 38,406
Expanded form breaks it apart: 30,000 + 8,000 + 400 + 6
Why this helps: - You see each digit's value clearly - It makes adding and comparing easier
Convert to expanded: 64,902 = 60,000 + 4,000 + 900 + 2
Convert to standard: 50,000 + 2,000 + 70 + 9 = 52,079
Try it
Convert both ways: 1. 72,518 to expanded form 2. 90,406 to expanded form 3. 40,000 + 900 + 60 + 3 to standard form 4. 30,000 + 5,000 + 200 + 8 to standard form