Printable Activity: Identifying Tens and Ones in Numbers 11-19

📚 Topic Summary

Numbers 11 through 19 are special because they're made up of two parts: a 'ten' and some 'ones'. Think of it like this: the number 12 has one group of ten and two extra ones. The digit '1' in the tens place represents ten, while the other digit represents the number of single units, or 'ones'. Understanding this concept is the first step to mastering bigger numbers later on!

Each number from 11-19 has one group of 10. What changes is the number of ones.

🔤 Part A: Vocabulary

Match the terms with their definitions. Write the correct letter next to the number.

1. 1. Tens Place
2. 2. Ones Place
3. 3. Digit
4. 4. Number
5. 5. Value

1. A. The position of a digit that determines its worth (e.g., in 12, the '2' represents two ones)
2. B. A symbol used to represent a quantity (e.g., 1, 2, 3)
3. C. The position of a digit that determines its worth (e.g., in 12, the '1' represents ten)
4. D. A count or measurement
5. E. A symbol representing a quantity (e.g., 12, 35, 100)

Write your answers here:

1. 1. __
2. 2. __
3. 3. __
4. 4. __
5. 5. __

✍️ Part B: Fill in the Blanks

Complete the paragraph using the words provided: ones, ten, 10, numbers, place.

The __________ from 11 to 19 are made of a group of __________ and some extra __________. We say that the digit '1' is in the tens __________ which means it represents __________. For example, 15 has one group of ten and five __________.

🤔 Part C: Critical Thinking

Explain in your own words how you can use objects (like blocks or counters) to show that the number 17 is made up of one ten and seven ones.