Problem Analysis:
The task involves solving addition problems using visual representations of numbers. Each number is represented by a grid of dots, where each dot corresponds to a unit. The goal is to add the numbers and provide the correct sum.
Step-by-Step Solution:
####
First Row:
1.
9 + 11 = ?
- Visual representation:
- First number (9): A grid with 9 dots.
- Second number (11): A grid with 11 dots.
- Sum: \( 9 + 11 = 20 \)
2.
15 + 16 = ?
- Visual representation:
- First number (15): A grid with 15 dots.
- Second number (16): A grid with 16 dots.
- Sum: \( 15 + 16 = 31 \)
####
Second Row:
3.
19 + 19 = ?
- Visual representation:
- Both numbers (19): Grids with 19 dots each.
- Sum: \( 19 + 19 = 38 \)
4.
8 + 7 = ?
- Visual representation:
- First number (8): A grid with 8 dots.
- Second number (7): A grid with 7 dots.
- Sum: \( 8 + 7 = 15 \)
####
Third Row:
5.
20 + 9 = ?
- Visual representation:
- First number (20): A grid with 20 dots.
- Second number (9): A grid with 9 dots.
- Sum: \( 20 + 9 = 29 \)
6.
18 + 20 = ?
- Visual representation:
- First number (18): A grid with 18 dots.
- Second number (20): A grid with 20 dots.
- Sum: \( 18 + 20 = 38 \)
####
Fourth Row:
7.
16 + 15 = ?
- Visual representation:
- First number (16): A grid with 16 dots.
- Second number (15): A grid with 15 dots.
- Sum: \( 16 + 15 = 31 \)
8.
17 + 14 = ?
- Visual representation:
- First number (17): A grid with 17 dots.
- Second number (14): A grid with 14 dots.
- Sum: \( 17 + 14 = 31 \)
####
Fifth Row:
9.
14 + 13 = ?
- Visual representation:
- First number (14): A grid with 14 dots.
- Second number (13): A grid with 13 dots.
- Sum: \( 14 + 13 = 27 \)
10.
12 + 10 = ?
- Visual representation:
- First number (12): A grid with 12 dots.
- Second number (10): A grid with 10 dots.
- Sum: \( 12 + 10 = 22 \)
Final Answers:
\[
\begin{array}{ll}
9 + 11 = 20 & 15 + 16 = 31 \\
19 + 19 = 38 & 8 + 7 = 15 \\
20 + 9 = 29 & 18 + 20 = 38 \\
16 + 15 = 31 & 17 + 14 = 31 \\
14 + 13 = 27 & 12 + 10 = 22 \\
\end{array}
\]
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
20 & 31 \\
38 & 15 \\
29 & 38 \\
31 & 31 \\
27 & 22 \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of 10 addition facts worksheet.
