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2. Multiply perfect number - Wikipedia

   en.wikipedia.org/wiki/Multiply_perfect_number

   In mathematics, a multiply perfect number (also called multiperfect number or pluperfect number) is a generalization of a perfect number. For a given natural number k , a number n is called k -perfect (or k -fold perfect) if the sum of all positive divisors of n (the divisor function , σ ( n )) is equal to kn ; a number is thus perfect if and ...

3. List of Schoolhouse Rock! episodes - Wikipedia

   en.wikipedia.org/wiki/List_of_Schoolhouse_Rock...

   During school on a cold winter's day, a young girl's thoughts about the multiplication of 8 revolve around winter games, particularly ice skating. The video briefly explores the distributive property of multiplication/addition for multiplying 8 by numbers higher than 10, and closes by noting the numeral 8's resemblance to a sideways infinity ...

4. Elementary arithmetic - Wikipedia

   en.wikipedia.org/wiki/Elementary_arithmetic

   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.

5. How teachers are using Taylor Swift's music to make 'learning ...

   www.aol.com/entertainment/teachers-using-taylor...

   Connelly began rewriting popular songs to help students learn multiplication in March. His first video, a reinterpretation of " I Want It That Way " by the Backstreet Boys, taught kids how to ...

6. Perfect number - Wikipedia

   en.wikipedia.org/wiki/Perfect_number

   In number theory, a perfect number is a positive integer that is equal to the sum of its positive proper divisors, that is, divisors excluding the number itself. For instance, 6 has proper divisors 1, 2 and 3, and 1 + 2 + 3 = 6, so 6 is a perfect number. The next perfect number is 28, since 1 + 2 + 4 + 7 + 14 = 28.

7. List of Mersenne primes and perfect numbers - Wikipedia

   en.wikipedia.org/wiki/List_of_Mersenne_primes...

   Perfect numbers are natural numbers that equal the sum of their positive proper divisors, which are divisors excluding the number itself. So, 6 is a perfect number because the proper divisors of 6 are 1, 2, and 3, and 1 + 2 + 3 = 6. [2] [4] Euclid proved c. 300 BCE that every prime expressed as M p = 2 p − 1 has a corresponding perfect number ...

8. YouTube's Ms. Rachel takes on first words and potty training ...

   www.aol.com/youtubes-ms-rachel-takes-first...

   Now better known as Ms. Rachel, she transformed her living room into a YouTube studio and began creating educational videos. They took off and she is now a YouTube phenomenon that has reached ...

9. Division (mathematics) - Wikipedia

   en.wikipedia.org/wiki/Division_(mathematics)

   The division with remainder or Euclidean division of two natural numbers provides an integer quotient, which is the number of times the second number is completely contained in the first number, and a remainder, which is the part of the first number that remains, when in the course of computing the quotient, no further full chunk of the size of ...