These problems are different.
They use the same math you already know — but wrapped in ways you haven't seen before. There's no rush. Think slowly. Write your reasoning. The answer matters less than HOW you got there.
🎨 Unfamiliar Territory
What is 5 + 0? What is 5 × 0? Why are the answers different?
Your thinking space:
🔗 Chain Reaction
Remove 1 from 10. You get 9. Remove 1 from 9. You get 8. Keep going. What happens at 1? What happens at 0?
Show each step:
💬 Explain Your Thinking
The number 20 has a zero in it. But 20 is NOT nothing. How can zero mean something?
Explain in your own words:
🏆 Olympiad Teaser
I add zero to a number and it stays the same. I multiply a number by zero and it becomes zero. Which is zero more 'powerful' at?
Think about what constraints the problem gives you. Write down what you KNOW for sure, then work from there. Often, trying small numbers first reveals a pattern.
Your answer and reasoning: