K–2 Math · Lesson 3 of 8
Lesson 3: Counting to 100
100 is a BIG number! We count to 100 by counting groups of ten. Let's learn how!
Key Concepts
Groups of Ten
Instead of counting one by one all the way to 100, we can count in groups of 10: 10, 20, 30, 40... all the way to 100! That is much faster!
The Hundreds Chart
A hundreds chart shows all the numbers from 1 to 100 in a grid. Each row has 10 numbers. There are 10 rows — that makes 100!
Skip Counting
Counting by 2s (2, 4, 6, 8...) or 5s (5, 10, 15, 20...) or 10s (10, 20, 30...) is called skip counting. It is a superpower for counting fast!
🆕 Activity: Hundreds Chart
Click the numbers to count by 10s! Watch how fast you can get to 100.
✅ Check Your Understanding
1. How many groups of 10 make 100?
2. When we count by 10s, what comes after 40?
3. What is skip counting?