Learn — Addition within 1000

Step 1 of 5

➕

😬 Does this look scary?

Three-digit addition Regrouping Carrying over Column addition

Don't worry. It's all just + − × ÷ in disguise. 🎭

Step 2 of 5

+

💡 The simple truth

Adding big numbers is just adding ones, then tens, then hundreds — one column at a time

245 + 138 = (200+100) + (40+30) + (5+8) = 383

Step 3 of 5

📖 Here's how it works

1

Ones first

Add the ones column first. If it goes over 9, carry 1 to the tens.

2

Then tens

Add tens including any carried number.

3

Finally hundreds

Add hundreds. Same process!

Step 4 of 5 — Quick practice

🧠 Can you solve this?

What is 324 + 251?

💡 Add hundreds first, then tens, then ones

Step 5 of 5

🎉

You've got this!

You now know that Addition within 1000 is just + in disguise. Time to prove it!

Level 1 — Easy