The quiz in this PDF focuses on rounding, estimation, integers, ordering integers, and comparisons.

Here's a solution guide for each question:

1. Rounding and Estimation

   • 1a. Circle the place value for rounding each number:
     • i) 34,509 and 34,243 → likely round to the nearest hundred or thousand.
     • ii) 183,456 and 40,389 → likely round to the nearest thousand or ten thousand.
     • Bonus) 875,234,239 and 672,092,456 → likely round to the nearest million.
   • 1b. Estimate the answers using the chosen place values.

2. Estimate Addition

   • Add 567,409 and 375,968 by rounding first (e.g., to nearest hundred thousand, yielding 570,000 + 380,000).

3. Identify and Order Integers

   • 3a. Circle integers on the number line: 4, -6, -1, 1.
   • 3b. Order them from least to greatest.

4. Representation of Sea Level

   • Write an integer for 149 m below sea level (answer: -149).

5. Opposite of an Integer

   • The opposite of -16 is 16.

6. Comparison of Integers

   • Write > or < for each:
     • a) 823 > -7642
     • b) -19 < -17
   • Bonus: Determine which is warmer: -2°C or -5°C.

Would you like detailed explanations for these steps?

---

Follow-Up Questions

1. How do you determine the place value for rounding in estimation problems?
2. What is the difference between exact and estimated answers?
3. How can we use a number line to understand ordering of negative integers?
4. Why is the opposite of a negative integer positive?
5. How do temperature comparisons work with negative numbers?

---

Tip

When comparing negative numbers, remember that the closer a number is to zero, the larger its value.