Discovering Teen Numbers: Building 11 to 15 with Tens and Ones! 🔟🌟
Welcome back, brilliant young mathematicians of Primary 1! In Chapter 1, we mastered numbers up to 10. Today, we step into the exciting world of two-digit numbers! When we have one complete group of ten and add single ones, we build the teen numbers: 11 (eleven), 12 (twelve), 13 (thirteen), 14 (fourteen), and 15 (fifteen)! Let us learn their place values and count like pros!
🌟 Building Numbers 11 through 15
- ⭐ 11 (Eleven): 1 ten and 1 one (10 + 1)
- ⭐ 12 (Twelve): 1 ten and 2 ones (10 + 2)
- ⭐ 13 (Thirteen): 1 ten and 3 ones (10 + 3)
- ⭐ 14 (Fourteen): 1 ten and 4 ones (10 + 4)
- ⭐ 15 (Fifteen): 1 ten and 5 ones (10 + 5)
🎯 Place Value: Ones & Tens
• Ones Place (Right): Single units from 0 to 9.
• Tens Place (Left): Each 1 here equals 10 full units!
• In 14: the digit 4 is in the ones place (value 4), and the digit 1 is in the tens place (value 10).
🧩 Ten-Frame Breakdown Activity
10 + 1
11 (Eleven)10 + 3
13 (Thirteen)10 + 5
15 (Fifteen)Tap any card to reveal its meaning, or tap the audio icon to listen:
Click on an option to check your answer and view the detailed explanation: