Numbers 11–20: Practice 5

🌍 Where you'd use this: Every time you check the score, count change, or figure out how long until something — that's this.

🤯 Fun fact: 🤯 Multiplication is just addition that got tired of writing things out.

🏆 Try this week: Time yourself on 10 mental math problems before bed for 5 days. Track your speed.

👨‍👩‍👧 At dinner: “What's the fastest way you can think of to solve 27 + 18? No paper.”