Rounding Negative Numbers

Name:

Date:

📚 Part 1: Multiple Choice

1. Round -17°C to the nearest 10.

-20

-10

-17

2. Round -34 to the nearest 10.

-40

-30

-35

3. Round -75 to the nearest 100.

-100

-50

4. Round -146 to the nearest 100.

-100

-200

-150

✏️ Part 2: Short Answers & Reasoning

5. Round -17°C to the nearest 10. Use the number line below to show your working and explain in one sentence.

6. Round -75 to the nearest 10 and the nearest 100. Show calculations or a short explanation.

7. A shop account shows -$238 (a debt). Round this amount to the nearest 10 and to the nearest 100. Write both answers.

Nearest 10: _________

Nearest 100: _________

8. Exit ticket: In one or two sentences, explain how you decide which way to round negative numbers. Include the terms 'nearest', 'round up', 'round down', or 'towards/away from zero' where useful.

📝 Success Criteria & Differentiation

Success Criteria

- I can round negative whole numbers to the nearest 10 and 100 correctly.

- I can use a number line or place-value reasoning to explain my rounding choice.

- I can use correct mathematical vocabulary when describing my method.

Differentiation Strategies (for diverse learners)

- Support: Provide printed number lines with benchmarks (e.g. -100, -50, 0) and pair students with a peer tutor; allow use of counters or a number-line app.

- Scaffolded prompts: "Which two multiples of 10 is the number between?" or "Is the ones digit less than 5 or 5 and above?"

- Extension: Round negative decimals (e.g. -3.47 to nearest 0.1) or round to other place values (nearest 5, nearest 1000).

Classroom & Digital Links

- Use Education Perfect for additional practice and instant feedback; teacher can assign adaptive tasks.

- Encourage respectful collaboration and clear explanation of reasoning, reflecting our school values of integrity and stewardship.