Computation Operations

Hello Math Explorer! Get ready for an exciting adventure.

Each topic has fun activities and games to help you learn. Complete all sections to learn well!

Adding big numbers is easy when we break it down! We'll work with 4-digit numbers:

1. Start from the right (units place)
2. Add digits in the same place
3. Carry over to the next place if sum is 10 or more
4. Write down the digit and carry the tens

Subtracting big numbers is fun when you know how! We'll work with 4-digit numbers:

1. Start from the right (units place)

2. Subtract digits in the same place

3. Borrow from next place if needed

4. Remember: Borrowing means taking 10 from next column

Try solving this problem step by step!

After solving math problems, we can write the answer in words!

Here's how to write number names:

• Numbers 0-9: zero, one, two, three, four, five, six, seven, eight, nine
• Numbers 10-19: ten, eleven, twelve, thirteen, fourteen, fifteen, sixteen, seventeen, eighteen, nineteen
• Tens places: twenty, thirty, forty, fifty, sixty, seventy, eighty, ninety
• For two-digit numbers: tens + units (e.g., 25 = twenty-five)

Let's practice writing the answer in words!