To solve the problem of rounding off the given numbers to the nearest hundred, we need to follow these steps:
Steps for Rounding to the Nearest Hundred:
1. Identify the tens digit of the number.
2. If the tens digit is 5 or greater, round up to the next hundred.
3. If the tens digit is less than 5, round down to the current hundred.
Let's apply this step-by-step to each number:
---
1. 161
- The tens digit is
6.
- Since 6 is greater than or equal to 5, we round
up.
-
161 rounded to the nearest hundred is 200.
Answer:
- Circle "Round up."
- Write
200 in the box.
---
2. 322
- The tens digit is
2.
- Since 2 is less than 5, we round
down.
-
322 rounded to the nearest hundred is 300.
Answer:
- Circle "Round down."
- Write
300 in the box.
---
3. 456
- The tens digit is
5.
- Since 5 is equal to 5, we round
up.
-
456 rounded to the nearest hundred is 500.
Answer:
- Circle "Round up."
- Write
500 in the box.
---
4. 850
- The tens digit is
5.
- Since 5 is equal to 5, we round
up.
-
850 rounded to the nearest hundred is 900.
Answer:
- Circle "Round up."
- Write
900 in the box.
---
5. 210
- The tens digit is
1.
- Since 1 is less than 5, we round
down.
-
210 rounded to the nearest hundred is 200.
Answer:
- Circle "Round down."
- Write
200 in the box.
---
Final Answers:
1.
161 → 200 (Round up)
2.
322 → 300 (Round down)
3.
456 → 500 (Round up)
4.
850 → 900 (Round up)
5.
210 → 200 (Round down)
Boxed Final Answer:
\[
\boxed{
\begin{array}{ll}
1. & 200 \text{ (Round up)} \\
2. & 300 \text{ (Round down)} \\
3. & 500 \text{ (Round up)} \\
4. & 900 \text{ (Round up)} \\
5. & 200 \text{ (Round down)} \\
\end{array}
}
\]
Parent Tip: Review the logic above to help your child master the concept of rounding numbers to the nearest hundred worksheet.
