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What is a Number Bond? - visual explanation of number bonds, and link to free printables. Let's play math: Number bonds; Number Bond Worksheet; Number Bonds to 20 - Free printable PDF number bonds to 20 worksheet (number bonds to 10 and to 100 also available) Making sense of number bonds. - A detailed explanation of what number bonds are.
It has an aliquot sum of 42; within an aliquot sequence of thirteen composite numbers (30, 42, 54, 66, 78, 90, 144, 259, 45, 33, 15, 9, 4, 3, 1, 0) to the Prime in the 3-aliquot tree. From 1 to the number 30, this is the longest Aliquot Sequence. It is also: A semiperfect number, since adding some subsets of its divisors (e.g., 5, 10 and 15 ...
Such a number is algebraic and can be expressed as the sum of a rational number and the square root of a rational number. Constructible number: A number representing a length that can be constructed using a compass and straightedge. Constructible numbers form a subfield of the field of algebraic numbers, and include the quadratic surds.
The number 0 finally finds his place in the tree and goes to the top, joining with 10 and forming the large number 100 to scare the bees away. Then all the other numbers (including 8 wearing a bandage ) return and climb up the tree again, to cheer for 10 and 0’s bravery.
Printable version; In other projects ... Primes p that divide 2 n − 1, for some prime number n. 3, 7, 23, 31, 47, 89, ... All prime numbers from 31 to 6,469,693,189 ...
A list of articles about numbers (not about numerals). Topics include powers of ten, notable integers, prime and cardinal numbers, and the myriad system.