16 Mexico and Peru Math Mystery Pictures to practice place value and 1st/2nd grade operations. You can use this product for the Hispanic Heritage Month but also the Skull Mystery Picture for El Día de los Muertos!Each mystery picture comes with 8 different color key worksheets, allowing you to differentiate:Only numbersPlace value tens and ones as words: e.g. 2 tens 5 onesNumbers and place value numbers blocksNumbers and 1st grade additions within 20Numbers and 1st grade subtractions within 20Nu