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2. ABCya - Wikipedia

   en.wikipedia.org/wiki/ABCya

   ABCya.com was founded in 1996 by Alan Tortolani. [2] A public school teacher, Tortolani created his own activities for his students. Later, he decided to register a domain under ABCya.com. Tortolani chose this particular domain name "ABCya" to make it accessible to children and easy to type into a web browser.

3. World Maths Day - Wikipedia

   en.wikipedia.org/wiki/World_Maths_Day

   The Champions Challenge is a new addition to the 2021 competition. Top Year/Grade 9 and above World Maths Day student come together to compete in a knockout tournament. As part of the challenge, students will have their event live streamed, bringing mathematics and Esports together. [7]

4. Verbal arithmetic - Wikipedia

   en.wikipedia.org/wiki/Verbal_arithmetic

   Verbal arithmetic, also known as alphametics, cryptarithmetic, cryptarithm or word addition, is a type of mathematical game consisting of a mathematical equation among unknown numbers, whose digits are represented by letters of the alphabet. The goal is to identify the value of each letter.

5. Second grade - Wikipedia

   en.wikipedia.org/wiki/Second_grade

   In England, the second year of school is called year 1, with pupils 5 to 6 years old. Second grade is the equivalent to Year 3 in England and Wales, making it the fourth year of compulsory education. [3] In Scottish and Welsh schools, contemporary pupils are in their third year of compulsory education; this level is their fourth year in ...

6. Ninety-nine (addition card game) - Wikipedia

   en.wikipedia.org/wiki/Ninety-nine_(addition_card...

   Ninety-nine is a simple card game based on addition and reportedly popular among the Romani people. [1] It uses one or more standard decks of Anglo-American playing cards in which certain ranks have special properties, and can be played by any number of players.

7. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   Example of addition with carry. The black numbers are the addends, the green number is the carry, and the blue number is the sum. In the rightmost digit, the addition of 9 and 7 is 16, carrying 1 into the next pair of the digit to the left, making its addition 1 + 5 + 2 = 8. Therefore, 59 + 27 = 86.