K-5 friendly lesson
One small step at a time.Read the idea, try the activity, and celebrate each win as you go.
Build and Break Apart Teen Numbers
🔟 Teen numbers are 10 and some more. Break them into tens and ones.
Do this: Read the concept below, then try the quiz or activity.
Lesson 122 of 180
Concept
Teen numbers 11-19 are: 1 ten + some ones
Examples: • 13 = 10 + 3 • 17 = 10 + 7 • 19 = 10 + 9
This helps with place value and addition/subtraction.
Try it
Break apart: 1. 11 = 10 + __ 2. 16 = 10 + __ 3. 14 = 10 + __
Build: 4. 10 + 8 = __ 5. 10 + 2 = __ 6. Make 15 using tens and ones.