Every year, we like to put together challenges based on the year number. For 2020 we have made up two challenges:

  • Years 4 – 7 are challenged to enter 2020 into their calculator display and design a key sequence that reduces the display to zero
  • Years 1 – 3 start with entering 20 and reducing that to zero.

But there are rules – you have to use one operation and one digit at a time AND you have to use each digit once and once only.

Enjoy!

  • 2020 Challenges

    Every year, we like to put together challenges based on the year number. For 2020 we have made up two challenges:

    • Years 4 – 7 are challenged to enter 2020 into their calculator display and design a key sequence that reduces the display to zero
    • Years 1 – 3 start with entering 20 and reducing that to zero.

    But there are rules – you have to use one operation and one digit at a time AND you have to use each digit once and once only.

    Enjoy!

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