Topics: Starter | Arithmetic | Place Value | Problem Solving | Puzzles

• Transum,
•  
• What strategy could you use to solve a puzzle like this? I began by calculating the sum of the digits one to nine. I then considered in turn the following three possibilities:
  
  1. The sum of each column is less than ten which means there is no ‘carry’;
  2. There is one carry (either from the units to the tens or the tens to the hundreds column);
  3. There are two carries (both from the units to the tens and the tens to the hundreds column).
  
  The rest of the strategy and all 336 different solutions are given in the answer section below for subscribers.
• Alexa,
•  
• I got it!
  When I got the answer right it gave me a confetti party with music on the screen!
  Thank you!

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