Column Sums

Written addition and subtraction, the way it’s taught at school: two numbers one under the other, and your child writes the answer from the right, one digit at a time.

  • 6–12 years
  • Read aloud
  • No ads
  • EN · БГ · РУ · УК
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Column Sums, a screen from the game

What your child learns

  • Adding in columns, with carrying
  • Subtracting in columns, with borrowing (across zeros too)
  • Decimals in columns

How to play

Your child types each digit on the digit pad or the keyboard, starting with the ones. Carries appear small above the next column; a ten taken when subtracting crosses out the top digit. A wrong digit: Owlie explains just that column.

Levels

  1. Level 1Two-digit sums with a carry.
  2. Level 2Three-digit subtractions with borrowing.
  3. Level 3Decimals.

A tip for parents

If your child is stuck, ask them to explain one column out loud: saying it often solves it.

Works on phones, tablets and computers, with nothing to install. No ads and no tracking.

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