Place Value Blocks - 4 Digits worksheet for learning number formation with base ten blocks.

Problem Description:

The task involves interpreting base ten blocks to write the numbers they represent. Base ten blocks are a visual tool used to teach place value, where:
- Cubes represent thousands (1,000),
- Flats represent hundreds (100),
- Rods represent tens (10),
- Units represent ones (1).

We need to count the number of each type of block in each problem and combine them to form the corresponding number.

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Solution:

#### 1)
- Cubes (Thousands): 2
- Flats (Hundreds): 5
- Rods (Tens): 7
- Units (Ones): 6

The number is formed by combining these values:
\[
2 \text{ (thousands)} + 5 \text{ (hundreds)} + 7 \text{ (tens)} + 6 \text{ (ones)} = 2,576
\]

#### 2)
- Cubes (Thousands): 3
- Flats (Hundreds): 4
- Rods (Tens): 2
- Units (Ones): 8

The number is:
\[
3 \text{ (thousands)} + 4 \text{ (hundreds)} + 2 \text{ (tens)} + 8 \text{ (ones)} = 3,428
\]

#### 3)
- Cubes (Thousands): 2
- Flats (Hundreds): 3
- Rods (Tens): 5
- Units (Ones): 9

The number is:
\[
2 \text{ (thousands)} + 3 \text{ (hundreds)} + 5 \text{ (tens)} + 9 \text{ (ones)} = 2,359
\]

#### 4)
- Cubes (Thousands): 4
- Flats (Hundreds): 2
- Rods (Tens): 6
- Units (Ones): 7

The number is:
\[
4 \text{ (thousands)} + 2 \text{ (hundreds)} + 6 \text{ (tens)} + 7 \text{ (ones)} = 4,267
\]

#### 5)
- Cubes (Thousands): 1
- Flats (Hundreds): 6
- Rods (Tens): 4
- Units (Ones): 9

The number is:
\[
1 \text{ (thousands)} + 6 \text{ (hundreds)} + 4 \text{ (tens)} + 9 \text{ (ones)} = 1,649
\]

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Final Answers:

\[
\boxed{2576, 3428, 2359, 4267, 1649}
\]