Can you find the missing number?
In this challenge you will see three large squares, each containing four smaller squares. To complete the puzzle you'll need to figure out which number is missing from one of the boxes.
It may help to have a pencil and paper to jot down your thoughts. You have 90 seconds to find the missing number, although you can have more than one go. Good luck!
If you need some extra help, just click Show More to reveal a hint.
What is the total amount of each large square if you add up the numbers inside the smaller squares?
This article was published in April 2023
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