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
Find two numbers that subtract to give 4. How many pairs can you find? Is the list endless?
Your thinking space:
🔗 Chain Reaction
Start at 20. Subtract 3, then 3, then 3. Where do you stop? Can you reach exactly 0?
Show each step:
💬 Explain Your Thinking
Why can't you do 3 - 8 with counting objects? (Or can you?)
Explain in your own words:
🏆 Olympiad Teaser
🔲 - 🔲 = 5 using digits 1-9. How many different solutions exist?
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: