Aztecs were dominant in Central Mexico in the 1300s through the early 1500s. Their major mathematical ideas: - They had vigesimal number system ( using 20 as its base ). For example: 23 = 1 dot + 3 lines - They had knowledge about multiplication and division and also about certain principles in geometry. - They estimated land area in parcels that were often irregularly shaped. - They had standard unit of linear measurement ( about 2.5 meters ).
