Problem Analysis:
The task involves
composing numbers from 11 to 19. The worksheet uses a visual representation where each number is broken down into two parts: a group of 10 and some additional units. This helps students understand place value and the concept of "tens and ones."
Key Observations:
1. Each number is represented as the sum of 10 and another number.
2. The top circle in each diagram represents the total number, while the bottom circles show the breakdown into 10 and the remaining units.
3. Some circles are filled with numbers, while others are blank and need to be completed.
Step-by-Step Solution:
#### Row 1:
-
10 + 3: The total is \(10 + 3 = 13\). So, the top circle should be filled with
13.
-
10 + 2: The total is \(10 + 2 = 12\). So, the top circle should be filled with
12.
-
10 + 1: The total is \(10 + 1 = 11\). So, the top circle should be filled with
11.
#### Row 2:
-
10 + 5: The total is \(10 + 5 = 15\). So, the top circle should be filled with
15.
-
10 + 7: The total is \(10 + 7 = 17\). So, the top circle should be filled with
17.
-
10 + 6: The total is \(10 + 6 = 16\). So, the top circle should be filled with
16.
#### Row 3:
-
10 + 8: The total is \(10 + 8 = 18\). So, the top circle should be filled with
18.
-
10 + 9: The total is \(10 + 9 = 19\). So, the top circle should be filled with
19.
-
12: The number 12 is already given. To break it down, we see that \(12 = 10 + 2\). So, the bottom circle should be filled with
2.
-
10 + 4: The total is \(10 + 4 = 14\). So, the top circle should be filled with
14.
Final Answer:
Filling in all the blanks, the completed worksheet looks like this:
```
Name: __________________________ Composing Numbers 11-19
13 12 11
/ \ / \ / \
10 + 3 10 + 2 10 + 1
15 17 16
/ \ / \ / \
10 + 5 10 + 7 10 + 6
18 19 12 14
/ \ / \ / \ / \
10 + 8 10 + 9 10 + 2 10 + 4
```
Thus, the final answer is:
\[
\boxed{13, 12, 11, 15, 17, 16, 18, 19, 2, 14}
\]
Parent Tip: Review the logic above to help your child master the concept of composing and decomposing numbers worksheet.
