Every teen number has a full ten inside it.
Step 1: Let's Learn
Read it, or press Listen and follow the words.
Ten and some more
13 is one ten and 3 ones. Fill one frame, then start the next.
7 more would make 20.
Counters
Always exactly one ten
Every teen has one ten, never two. That is what makes it a teen. At twenty you earn a second ten.
This is the fact everything rests on
Twenty-three is two tens and three. Hundreds work the same way. Get this and the rest of place value follows.
Step 2: Try It Yourself
Tap and try it out.
How many
6 more would make 20.
Step 3: Watch an Example
One step at a time.
Watch Ana Build 16
Ana builds 16 on two ten-frames.
- Step 1
She fills the first frame completely. That is 10.
Step 4: Your Turn
Practice makes it stick.
Counting Buttons
Problem 1 of 1
Leo has one full ten of buttons and 5 loose ones. How many buttons?
buttons
Ten and How Many?
Every teen number is ten and some more.
1 of 2
10 + 4 = ?
2 of 2
10 + 7 = ?
Step 5: Quick Check
Show what you know.
Question 1 of 2
10 + 2 = ?
Question 2 of 2
10 + 9 = ?
What You Learned
- Every teen number holds one full ten.
- The rest are loose ones.
- 10 and 3 is 13.