Mental arithmetic with large numbers

What you'll learn

1. 1

   Imagine you have a giant bag of 1000 marbles! That's a lot, right?

2. 2

   If you have 3000 marbles and get 2000 more, how many do you have?

3. 3

   Use the number line to add 3000 + 4000. Jump in thousands!

4. 4

   Let's do one together: 6000 + 3000 = ?

5. 5

   Now you try: 2000 + 5000 = ? Use the number line to check.

6. 6

   What is 4000 + 4000?

7. 7

   What is 9000 − 3000? (Subtract by jumping backwards in thousands!)