About Make a Ten
Add numbers by making tens. Break apart and combine numbers while focusing on place value. Use the adding screen to add any two numbers. Use the game screen to apply your make-a-ten strategies!
How to play Make a Ten
Everything is hands-on: drag, click and experiment — the simulation reacts instantly. Add numbers by making tens.
Questions & answers
- What is Make a Ten?
- Make a Ten is a free interactive simulation from PhET Interactive Simulations (University of Colorado Boulder) that you can play right in your browser on crumble.lol — no downloads and no sign-up. Add numbers by making tens. Break apart and combine numbers while focusing on place value.
- What can kids learn from Make a Ten?
- It helps kids explore: improve understanding of place value by using different sizes of papers for ones, tens, and hundreds. develop mental math strategies when taking apart and putting together numbers. use the “make a ten” strategy when counting and doing addition. develop a mental model of the basic properties of numbers including commutativity, associativity, and closure.
- What age is Make a Ten good for?
- It is designed for elementary school (roughly ages 5–10), and curious kids outside that range can absolutely enjoy poking around it too.
- Is Make a Ten free to play?
- Yes — Make a Ten is completely free on crumble.lol and runs fully in your browser on computers and tablets.