Lesson 45 of 84 · Numbers 11–20
hard⭐ 30 XP🥊 Number ArenaNumbers 11–20: Practice 45
In this Kindergarten lesson on Numbers 11–20, you will practice solving problems like: "Count the objects: ⭐⭐⭐⭐. How many stars are there?". Work through each problem carefully, use the hints if you need help, and check your answers. This builds your understanding of numbers 11–20 step by step.
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🌍 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: 🤯 Your brain can do basic math faster than a 1980s computer. Probably faster than this phone too — for tiny numbers.
🏆 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.”
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Send it to a parent looking for a 5-minute math win that doesn't feel like homework.
Checkout complete lesson on Numbers 11–20 for Kindergarten
Get the full Numbers 11–20 track as a printable PDF — all lessons, worksheets, and answer keys.