This colorful Grade IV math worksheet helps students practice rounding various numbers to the nearest thousands place.

Problem Description:

The task is to round each given number to the nearest thousand. This involves understanding how to round numbers based on the digit in the hundreds place. If the digit in the hundreds place is 5 or greater, we round up; otherwise, we round down.

Steps to Solve:

1. Identify the数千位 (thousands place): The thousands place is the fourth digit from the right.
2. Look at the hundreds place: The hundreds place is the third digit from the right. This digit determines whether we round up or down.
- If the hundreds digit is 5 or greater, round up.
- If the hundreds digit is less than 5, round down.
3. Round the number:
- If rounding up, increase the thousands digit by 1 and set all digits to the right of the thousands place to 0.
- If rounding down, keep the thousands digit as it is and set all digits to the right of the thousands place to 0.

Solution:

#### 1. 1,391
- Thousands place: 1
- Hundreds place: 3 (less than 5)
- Round down: 1,000

#### 2. 3,556
- Thousands place: 3
- Hundreds place: 5 (equal to 5)
- Round up: 4,000

#### 3. 8,929
- Thousands place: 8
- Hundreds place: 9 (greater than 5)
- Round up: 9,000

#### 4. 10,318
- Thousands place: 0 (in the ten-thousands place)
- Hundreds place: 3 (less than 5)
- Round down: 10,000

#### 5. 16,593
- Thousands place: 6
- Hundreds place: 5 (equal to 5)
- Round up: 17,000

#### 6. 267,219
- Thousands place: 7
- Hundreds place: 2 (less than 5)
- Round down: 267,000

#### 7. 409,991
- Thousands place: 9
- Hundreds place: 9 (greater than 5)
- Round up: 410,000

#### 8. 899,213
- Thousands place: 9
- Hundreds place: 2 (less than 5)
- Round down: 899,000

#### 9. 910,283
- Thousands place: 0 (in the hundred-thousands place)
- Hundreds place: 2 (less than 5)
- Round down: 910,000

#### 10. 952,715
- Thousands place: 2
- Hundreds place: 7 (greater than 5)
- Round up: 953,000

Final Answer:

\[
\boxed{
\begin{array}{ll}
1. & 1,391 \rightarrow 1,000 \\
2. & 3,556 \rightarrow 4,000 \\
3. & 8,929 \rightarrow 9,000 \\
4. & 10,318 \rightarrow 10,000 \\
5. & 16,593 \rightarrow 17,000 \\
6. & 267,219 \rightarrow 267,000 \\
7. & 409,991 \rightarrow 410,000 \\
8. & 899,213 \rightarrow 899,000 \\
9. & 910,283 \rightarrow 910,000 \\
10. & 952,715 \rightarrow 953,000 \\
\end{array}
}
\]