Subtraction

Hello Math Explorer! Get ready for an exciting adventure.

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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 two two-digit numbers is exciting! Let's learn step by step!

Example: 34 - 17

1. Start at the right (units place): 4 - 7? Can't do it! Need to borrow
2. Borrow from tens: take 1 from tens place (3 becomes 2) and give 10 to units (4 becomes 14)
3. Subtract units: 14 - 7 = 7
4. Subtract tens: 2 - 1 = 1
5. Combine: write down 1 in tens and 7 in units → result is 17

Try solving this 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!