To find the factors of a number , you have to find all the pairs of numbers that multiply together to give that number .. The factors of $48$ are: $1$ and $48$ $2$ and $24$ $3$ and $16$ $4$ and $12$ $6$ and $8$ If we leave out the number we started with, $48$, and add all the other factors, we get $76$:, Abundant Numbers. To find the factors of a number, you have to find all the pairs of numbers that multiply together to give that number. The factors of $48$ are: $1$ and $48$ $2$ and $24$ $3$ and $16$ $4$ and $12$ $6$ and $8$ If we leave out the number we started.
Twelve is the first abundant number. The next abundant number is 18 because the proper divisors sum to 21 (1 + 2 + 3 + 6 + 9). The first five abundant numbers are 12, 18, 20, 24, and 30. As it turns out, the twenty-one abundant numbers under 100 are all even. Not all abundant numbers, however, are even; the first odd abundant number is 945.
1/30/2015 · An engaging investigation in order to develop children’s understanding of factors. Idea given on the Nrich website which is also included. Good opportunity for mixed ability group work to use mathematical discussion.
NRICH F-6 curriculum mapping document Mapping to the Australian Curriculum – Number and Algebra Many Australian teachers access the problems, games and investigations from the website www. nrich .maths.org to use with their students either as launch activities or as longer investigations during mathematics lessons.
NRICH F-6 curriculum mapping document, Numbers: Abundant, Deficient, Perfect, and Amicable …
Numbers: Abundant, Deficient, Perfect, and Amicable …
Numbers: Abundant, Deficient, Perfect, and Amicable …
Deficient Number, Perfect Number, Weird Number, Semiperfect Number, Prime Number
