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  • Place Value
  • Addition
  • Subtraction
  • Arithmetic


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!

Sample Learning Goals

  • 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.
To play simulation click below:
License:[Source phet ]April 30, 2019, 8:51 p.m.