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    Try the monthly challenge

    • Dec – 2019 challenge

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    Puzzles

    • 4’s challenge
    • Arithmetic operators
    • Alphametic
    • ARITH-Maze
    • ARITHMAGON (addition)
    • Can-U-Figure-It-Out
    • Chinese multiplication
    • CIRCLE-Sums
    • CROSS-NUMBERS
    • DARTS Challenge
    • Egyptian arithmetic
    • EQUATE+0,+1,+2 & +3
    • EQUATE-Sums
    • EQUATE-Takeaways
    • EQUATE-Times
    • Fractions, decimals and %ages
    • HEXAGON-numeric
    • Matchsticks
    • Mind-Xpander Logic
    • Petite CIRCLE-Sums
    • Polygons
    • Prime numbers
    • Relational
    • Roman arithmetic
    • Safety code
    • Scientific / Engineering notation
    • SQUARE-Sums
    • SQUARE-Up
    • STAR-Sums
    • SUM-IT
    • SUM-IT ‘4-sided’ Pyramid
    • X-Sums

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    All monthly challenges

    • Dec – 2019 challenge
    • Nov – 2019 challenge
    • Oct – 2019 challenge
    • Sep – 2019 challenge
    • Aug – 2019 challenge
    • July – 2019 challenge
    • June – 2019 challenge
    • May – 2019 challenge
    • April – 2019 challenge
    • March 2019 challenge
    Designed by Fiona Laufs