The Primary Quiz Puzzle Archive contains over 200 puzzles and activities to challenge your pupils every day. We'll share a different puzzle from our archive here every week.
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Primary Quiz - Puzzle of the Week
Last Week's Solution
Solution
The second digit must be either 4 or 9, but has to be 4 so that digit 5 can be 8. The first digit is either 7 or 9, but must be 9 so that digit 4 can be 3. Digit 3 must be 7, as 3+4 is the only possible option that leaves a single digit.