Base Ten Blocks Addition Worksheet for Elementary Math Practice

The task involves using base ten blocks to solve addition problems. Base ten blocks are a visual and tactile tool used to represent numbers in the decimal system. Here's how to approach each problem:

Key Representation:

- Large rods (tens): Each rod represents 10.
- Small cubes (ones): Each cube represents 1.

Steps to Solve:

1. Count the number of tens rods in each group.
2. Count the number of ones cubes in each group.
3. Add the tens together.
4. Add the ones together.
5. Combine the totals to get the final sum.

Solutions:

#### Problem 1:
- Left side: 4 tens rods and 3 ones cubes → 40 + 3 = 43
- Right side: 2 tens rods and 5 ones cubes → 20 + 5 = 25
- Total: 43 + 25 = 68

#### Problem 2:
- Left side: 3 tens rods and 7 ones cubes → 30 + 7 = 37
- Right side: 2 tens rods and 4 ones cubes → 20 + 4 = 24
- Total: 37 + 24 = 61

#### Problem 3:
- Left side: 2 tens rods and 6 ones cubes → 20 + 6 = 26
- Right side: 3 tens rods and 9 ones cubes → 30 + 9 = 39
- Total: 26 + 39 = 65

#### Problem 4:
- Left side: 5 tens rods and 4 ones cubes → 50 + 4 = 54
- Right side: 1 ten rod and 8 ones cubes → 10 + 8 = 18
- Total: 54 + 18 = 72

#### Problem 5:
- Left side: 4 tens rods and 2 ones cubes → 40 + 2 = 42
- Right side: 3 tens rods and 6 ones cubes → 30 + 6 = 36
- Total: 42 + 36 = 78

#### Problem 6:
- Left side: 3 tens rods and 5 ones cubes → 30 + 5 = 35
- Right side: 2 tens rods and 7 ones cubes → 20 + 7 = 27
- Total: 35 + 27 = 62

#### Problem 7:
- Left side: 2 tens rods and 4 ones cubes → 20 + 4 = 24
- Right side: 1 ten rod and 6 ones cubes → 10 + 6 = 16
- Total: 24 + 16 = 40

#### Problem 8:
- Left side: 6 tens rods and 3 ones cubes → 60 + 3 = 63
- Right side: 4 tens rods and 5 ones cubes → 40 + 5 = 45
- Total: 63 + 45 = 108

Final Answers:

1. \( 43 + 25 = 68 \)
2. \( 37 + 24 = 61 \)
3. \( 26 + 39 = 65 \)
4. \( 54 + 18 = 72 \)
5. \( 42 + 36 = 78 \)
6. \( 35 + 27 = 62 \)
7. \( 24 + 16 = 40 \)
8. \( 63 + 45 = 108 \)

Boxed Final Answer:

\[
\boxed{
\begin{array}{ccc}
1) & 43 + 25 = 68 \\
2) & 37 + 24 = 61 \\
3) & 26 + 39 = 65 \\
4) & 54 + 18 = 72 \\
5) & 42 + 36 = 78 \\
6) & 35 + 27 = 62 \\
7) & 24 + 16 = 40 \\
8) & 63 + 45 = 108 \\
\end{array}
}
\]