🔢 Topic Summary
Teen numbers, those from 11 to 19, are special because they're built upon the number 10. Each teen number is essentially a group of ten combined with some additional ones. Understanding this '10 and some ones' concept is a foundational step in grasping place value and how larger numbers are constructed.
For example, the number 14 is made up of 10 and 4 ones. Similarly, 17 consists of 10 and 7 ones. By visualizing teen numbers in this way, children can develop a stronger number sense and a better understanding of arithmetic operations.
🔤 Part A: Vocabulary
Match the term with its definition:
| Term |
Definition |
| 1. Teen Number |
a. A group of ten |
| 2. Place Value |
b. Numbers between 13 and 19 |
| 3. Ten |
c. The value of a digit based on its position in a number |
| 4. Ones |
d. Individual units |
| 5. Compose |
e. To create by putting parts together |
✍️ Part B: Fill in the Blanks
Teen numbers are made up of a ______ and some ______. The number 15, for example, is made of ______ ten and ______ ones. Understanding this helps us with ______ and understanding bigger numbers!
🤔 Part C: Critical Thinking
Imagine you have 10 building blocks. How many more blocks do you need to make the number 18? Explain your answer.