**Step 1:** Imagine you have 10 ✈️ planes!
Your planes:
✈️ ✈️ ✈️ ✈️ ✈️
✈️ ✈️ ✈️ ✈️ ✈️
(10)
**Step 2:** Now, take away 6 ✈️ planes.
✈️ ✈️ ✈️ ✈️ ✈️
✈️ ✈️ ✈️ ✈️ ✈️
(10)
Take away 6 planes:
✈️ ✈️ ✈️
✈️ ✈️ ✈️
(6)
**Step 3:** Let's see how many planes are left!
✈️ ✈️ ✈️
✈️ ✈️ ✈️
(6)
Planes left:
✈️ ✈️ ✈️ ✈️
(4)
**Great!**
So, $10 - 6 = 4$.
You have 4 planes left! 🎉✈️ ✈️ ✈️ ✈️
(4)