Counting does not stop at 20. It keeps going the same way.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
The same pattern, again
After 21 comes 22, then 23. After 31 comes 32, then 33. The ending is always the same.
This chart has ten in every row. That is why the pattern lines up.
Why the pattern repeats
There are only ten digits. When the ones run out, the only way onward is one more ten and start the ones again.
The joins are the hard part
29 to 30, 39 to 40. Both digits change at once. Everywhere else, only the ones move.
Step 2: Try It Yourself
Tap the numbers and say them out loud.
Step 3: Watch an Example
One step at a time.
Watch Ana Count
Ana counts from 28 to 32.
- Step 1
She says 28, then 29. That row is nearly full.
Step 4: Your Turn
Practice makes it stick.
Counting Stickers
Problem 1 of 1
Leo counts 27 stickers, then finds one more. How many now?
stickers
What Comes Next?
Say the numbers out loud first.
1 of 3
What comes after 29?
2 of 3
What comes after 34?
3 of 3
What comes after 39?
Step 5: Quick Check
Show what you know.
Question 1 of 2
What comes right after 20?
Question 2 of 2
Which row does 33 sit in?
What You Learned
- Counting keeps going past 20.
- Every row of the chart holds ten numbers.
- The endings 1 to 9 repeat in every row.