Add and subtract 4-digit numbers

What you'll learn

1. 1

   Imagine you have 3,427 toy bricks 🧱. Your friend gives you 2,156 more. Let's add them together!

2. 2

   When adding 3,427 and 2,156, which column do you start adding from first?

3. 3

   Build 3,427 by dragging the right number of thousands, hundreds, tens and ones.

4. 4

   Let's add 3,427 + 2,156 together.

5. 5

   Now try adding 4,538 + 1,247 — drag to build the answer.

6. 6

   What is 4,538 + 1,247?

7. 7

   What is 6,294 − 3,182? (Think: start with the ones!)