Home/First Grade Math/Week 23: Place value /Lesson 1
K-5 friendly lesson
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Build and Break Apart Teen Numbers

šŸ”Ÿ Teen numbers are 10 and some more. Break them into tens and ones.

Lesson 1

Concept

Teen numbers 11-19 are: 1 ten + some ones Examples: ā€¢ 13 = 10 + 3 ā€¢ 17 = 10 + 7 ā€¢ 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.