Numbers - alphabetical index

A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z

A	abacus abacus number counter abacus - enter number to see it on an abacus abacus - interactive eastern abacus abacus - interactive simple abacus abacus - using a simple abacus abacus system - comparison between number systems abacus system - Chinese rod numbers addition - Arabic numbers addition tables addition - associative addition - calculation machines addition - carry addition - commutative addition - decimals addition - larger numbers addition - pairs that add to ten addition - practise adding addition - types of numbers addition in binary addition in Egyptian numbers alpha - Greek number symbol for one and - addition alphabetical order of number words Arab use of numbers Arabic numbers Arabic number counter Arabic number symbols Arabic numbers - addition Arabic numbers - decimals Arabic numbers - division Arabic numbers - fractions Arabic numbers - how they work Arabic numbers - less than 1 Arabic numbers - multiplication Arabic numbers - positional Arabic numbers - subtraction Arabic numbers - types of numbers Arabic numbers - zero arithmetic with fractions arithmetic calculator arithmetic mean "as sure as one and one is two" associative - addition associative - not division associative - multiplication associative - not subtraction average
B	Babylonian numbers Babylonian number counter Babylonian number symbols Babylonian numbers - how they worked Babylonian numbers - unary & positional Babylonian numbers - zero baker's dozen base - comparison between number systems base 2 - binary numbers base 5/10 - Roman numbers base 5/10/100 - Chinese rod numbers base 5/20 - Mayan numbers base 10 - Arabic numbers base 10 - Chinese financial numbers base 10 - Chinese standard numbers base 10 - Egyptian numbers base 10 - Greek numbers base 10/60 - Babylonian numbers base 60 - modern bases - other bases other than ten bases other than ten number counter bases other than ten number symbols bases other than ten - how they work bases other than ten - positional bases other than ten - zero beta - Greek number symbol for two big number words binary in Egyptian multiplication binary numbers binary number counter binary number symbols binary numbers - adding binary numbers - card game - computer plays binary numbers - card game - how the game works binary numbers - card game - you play binary numbers - how they work binary numbers - multiplying binary numbers - positional binary numbers - zero BODMAS - order of calculation Boolean logic borrow - subtraction box and whisker plot brace
C	C - Roman number symbol for hundred calculate e calculate golden ratio calculate natural log calculate pi calculate root 2 calculating machines calculating machines - abacus calculating machines - Napier's bones calculating machines - slide rule calculating machines - logarithms calculating machines - calculator calculating numerical values of words - Greek calculation order calculator calculator - arithmetic calculator calculator - calculators on computers calculator - how to use a calculator calculator - simple calculator card game demonstrating binary cardinals - types of numbers carry - addition carry - division carry - multiplication carry - subtraction chi - Greek number symbol for six hundred Chinese financial numbers Chinese financial number counter Chinese financial number symbols Chinese financial numbers - how they work Chinese financial numbers - word system Chinese financial numbers - zero Chinese rod numbers Chinese rod number counter Chinese rod number symbols Chinese rod numbers - abacus Chinese rod numbers - how they work Chinese rod numbers - positional Chinese rod numbers - no zero Chinese standard numbers Chinese standard number symbols Chinese standard number counter Chinese standard numbers - how they work Chinese standard numbers - word system Chinese standard numbers - zero Chisenbop counting Chisenbop number counter Christmas song circle's circumference - pi clay - Babylonian numbers clocks using Roman numbers coil of rope - Egyptian number symbol comma used as decimal point commutative - addition commutative - not division commutative - multiplication commutative - not subtraction comparison number systems compare fractions compare fractions, decimals and percentages complex numbers - i complex numbers - types of numbers complex plane computer calculators compound interest calculator confusion between mode, median and mean convert English to Greek letters copyright dates using Roman numbers count up to 100,000 on one hand countable infinite sets counting sheep couple
D	D - Roman number symbol for five hundred data handling data - gathering data data - make your own pictogram graph data - using pictogram graph page data - sorting data - median, mode, mean days in months Deaf signing numbers debt calculator decimal - Arabic numbers (base 10) decimal fractions decimals decimals - compare with fractions and percentages decimals - decimal point decimals - multiply / divide by ten decimals - rounding decimals - significant figures decimals in addition delta - Greek number symbol for four denominator of fraction different ways of writing Arabic digits diameter - pi digamma - Greek number symbol for six divide decimals by ten division - Arabic numbers division - not associative division - not commutative division - on paper division - partly distributive over addition and subtraction division - practise division - factors division - practise factors division - using calculating machines division - types of numbers distributive - multiplication over addition and subtraction distributive - division partly over addition and subtraction dot - Mayan number symbol for one double base - comparison between number systems dozen draw a spiral using Fibonacci numbers
E	e - base of natural logarithms e - what is it? e - value e - logarithms e - formula eastern abacus Egyptian numbers Egyptian number counter Egyptian number symbols Egyptian numbers - how they worked Egyptian numbers - addition Egyptian numbers - fractions Egyptian numbers - fractions - Horus' eye Egyptian numbers - infinity Egyptian numbers - multiplication Egyptian numbers - no zero Egyptian numbers - unary English words for numbers epsilon - Greek number symbol for five eta - Greek number symbol for eight European use of numbers exponent - logarithms exponent - types of numbers eye of Horus in Egyptian fractions
F	factors Fibonacci introduced Arabic numbers in Europe Fibonacci numbers and golden ratio Fibonacci numbers - what are they? Fibonacci numbers - natural occurrence Fibonacci numbers - draw a spiral financial Chinese numbers finger - Egyptian number symbol finger systems finger systems - signing numbers with hands finger systems - days in months finger systems - chisenbop counting finger systems - multiplying finger systems - multiply by nine finger systems - multiply by six, seven, eight or nine finger systems - count up to 100,000 on one hand finger techniques to help with multiplication formula using e formula using i formulae using pi formula using root 2 fractions fractions - arithmetic fractions - compare fractions - compare with decimals and percentages fractions - reducing fractions in Egyptian numbers French version - practise mental arithmetic French words for numbers
G	gamma - Greek number symbol for three gathering data geometric mean German words for numbers giving words numerical values - Greek golden ratio - What is it? golden ratio - golden rectangle googol and googolplex graph - pictogram great gross Greek numbers Greek number counter Greek number symbols Greek numbers - how they work Greek numbers - letter system Greek numbers - modern use Greek numbers - no zero Greek numbers - words having numerical values green bottles song green grow the rushes, O gross
H	handling data hands - way to remember Roman numbers help learning tables Hindu-Arabic numbers, otherwise known as Arabic numbers history of Arabic numbers history of Babylonian numbers history of Binary numbers history of Chinese numbers history of Egyptian numbers history of golden ratio history of googol and googolplex history of Greek numbers history of Mayan numbers history of pi history of Roman numbers history of root 2 history of zero how Arabic numbers work how Babylonian numbers worked how bases other than ten work how binary numbers work how Chinese financial numbers work how Chinese standard numbers work how Chinese rod numbers work how Chisenbop counting works how Egyptian numbers worked how Greek numbers work how Mayan numbers worked how Roman numbers worked how tallies work how to remember Roman number symbols how to use a calculator how to use Napier's bones how to write Arabic digits Heh - Egyptian number symbol Horus's eye in Egyptian fractions
I	I - Roman number symbol for one i - imaginary and complex numbers i - Mandelbrot set i - the complex plane i - what is i? i - what is square root of i? imaginary numbers - i imaginary numbers - types of numbers improper fractions infinity infinity - countable sets infinity - number of primes infinity - types of infinity infinity - types of numbers infinity in Egyptian numbers information for teachers iota - Greek number symbol for ten insertion sort integers - types of numbers interactive eastern abacus interactive Napier's bones interactive simple abacus interesting numbers interesting numbers - e - base of natural logarithms interesting numbers - golden ratio and Fibonacci numbers interesting numbers - googol and googolplex interesting numbers - imaginary and complex numbers interesting numbers - infinity interesting numbers - one interesting numbers - pi interesting numbers - square root of two interesting numbers - zero irrationals - infinity irrationals - types of numbers
J
K	kappa - Greek number symbol for twenty keraia - Greek symbol to show number koppa - Greek number symbol for ninety
L	L - Roman number symbol for fifty lambda - Greek number symbol for thirty large number hand counter large number words large Roman numbers larger numbers - addition larger numbers - division larger numbers - multiplication larger numbers - subtraction learning tables less than 1 letter system - comparison between number systems letter system - Greek numbers line - Mayan number symbol for five logarithms - calculating machines logarithms using e long division long division - using Napier's bones long multiplication long multiplication - using Napier's bones lotus - Egyptian number symbol links
M	M - Roman number symbol for thousand Mandelbrot set Mayan numbers Mayan number counter Mayan number symbols Mayan numbers - how they work Mayan numbers - unary & positional Mayan numbers - zero mean median minimum maximum mode mental arithmetic million - visualisation minus modern use of base 60 modern use of Greek numbers modern use of Roman numbers month lengths mowing song mu - Greek number symbol for forty multiplication - Arabic numbers multiplication tables multiplication - associative multiplication - commutative multiplication - distributive over addition and subtraction multiplication - long multiplication multiplication - on paper multiplication - order of calculation multiplication - patterns to help learning tables multiplication - practise multiplication - using fingers multiplication - using calculating machines multiplication - types of numbers multiplication in binary multiplication in Egyptian numbers multiplying by using fingers multiply by nine using fingers multiply by six to nine using fingers multiply decimals by ten Muslim use of numbers
N	Napier's bones Napier's bones - how to use Napier's bones Napier's bones - interactive Napier's bones - to cut out Napier's bones - using for long multiplication and division natural numbers - types of numbers natural numbers - infinity natural occurrence of Fibonacci numbers negative - types of numbers no zero - comparison between number systems no zero - Babylonian numbers (intermittent) no zero - Chinese financial numbers (intermittent) no zero - Chinese standard numbers (intermittent) no zero - Chinese rod numbers no zero - Egyptian numbers no zero - Greek numbers no zero - Roman numbers no zero - tallies nu - Greek number symbol for fifty number counters - all number counter - abacus number counter - Arabic number counter - Babylonian number counter - bases other than ten number counter - binary number counter - Chinese financial numbers number counter - Chinese standard numbers number counter - Chinese rod numbers number counter - Chisenbop number counter - Egyptian number counter - Greek number counter - Mayan number counter - Roman number counter - tallies number counter - words for numbers number counter - up to 100,000 on one hand number pairs that add to ten numbers as words numerator of fraction numerical values of words - Greek
O	omega - Greek number symbol for eight hundred omicron - Greek number symbol for seventy on the first day of Christmas once I caught a fish alive one one - properties one - "as sure as one and one is two" one - Boolean logic one man went to mow one potato one, two, three, four, five, once I caught a fish alive order of calculation ordinals - types of numbers other bases
P	pairs of numbers that add to ten paper - addition paper - division paper - multiplication paper - subtraction partial numbers partridge in a pear tree patterns to help learning tables percentages percentages - compare with decimals and fractions phi - Greek number symbol for five hundred pi - Greek number symbol for eighty pi - ratio of circle's circumference to its diameter pi - what is it? pi - calculate pi - history pi - various formulae pictogram graph piece of rope - Egyptian number symbol pine cones plus polygons - pi positional - comparison between number systems positional - Arabic numbers positional - Babylonian numbers (also unary) positional - bases other than ten positional - binary positional - Chinese rod numbers positional - Mayan numbers (also unary) positive - types of numbers potato song powers - types of numbers practise adding practise division practise factors practise mental arithmetic practise multiplication practise subtraction prime numbers prime numbers - infinity projects - information for teachers proof root two is irrational proper fractions psi - Greek number symbol for seven hundred
Q	quicksort quartile
R	radius - pi raising to a power - types of numbers rationals - infinity rationals - partial numbers rationals - types of numbers reals - infinity reals - types of numbers reducing fractions remainder remembering Roman number symbols rho - Greek number symbol for a hundred rod Chinese numbers Roman numbers Roman number counter Roman number symbols Roman numbers - how they work Roman numbers - how to remember the symbols Roman numbers - modern use Roman numbers - no zero Roman numbers - numbers greater than 4000 Roman numbers - unary rope - Egyptian number symbol root of -1 - i root of i root 2 roots - types of numbers roots - where they're found rounding decimals
S	sampi - Greek number symbol for nine hundred savings calculator scientific calculator score series for e series for golden ratio series for natural log series for pi series for root 2 sheep counting shell - Mayan number symbol for zero sigma - Greek number symbol for two hundred significant figures of decimals simple abacus simple abacus number counter simple calculator signing numbers with hands site map slide rule songs based on numbers songs - green grow the rushes, O songs - once I caught a fish alive songs - one man went to mow songs - one potato songs - partridge in a pear tree songs - ten green bottles sorts special words for numbers spiral using Fibonacci numbers square root of two - proof that it's irrational square root of two - visualise square root of two - value square root of two - where roots are found standard Chinese numbers stylus - Babylonian numbers subtraction - Arabic numbers subtraction tables subtraction - calculation machines subtraction - not associative subtraction - not commutative subtraction - larger numbers subtraction - practise subtraction - with borrow (method 1) subtraction - with carry (method 2) subtraction - with carry (method 3) subtraction - types of numbers Sumerians origin of Babylonian numbers sums symbol - infinity symbol - pi symbols - Arabic number symbols - Babylonian number symbols - bases other than ten symbols - binary number symbols - Chinese financial number symbols - Chinese standard number symbols - Chinese rod number symbols - Egyptian numbers symbols - Greek numbers symbols - Mayan numbers symbols - Roman numbers symbols - tallies
T	tables - addition tables - multiplication tables - subtraction tadpole - Egyptian number symbol tallies tallies counter tallies symbols tallies - how they work tallies - unary tallies - no zero take away tau - Greek number symbol for three hundred teachers - information ten green bottles ten thousand counting on one hand theta - Greek number symbol for nine Thoth's role in Egyptian fractions times tree sort types of numbers types of numbers - cardinals and Ordinals types of numbers - complex numbers types of numbers - imaginary numbers types of numbers - infinity types of numbers - integers types of numbers - irrationals types of numbers - natural numbers types of numbers - multiplication types of numbers - negative types of numbers - positive types of numbers - rationals types of numbers - reals
U	unary - comparison between systems unary - Egyptian numbers unary - Roman numbers unary - Babylonian numbers (also positional) unary - Mayan numbers (also positional) unary - tallies uncountable infinite sets upsilon - Greek number symbol for four hundred
V	V - Roman number symbol for five value of e value of golden ratio value of pi value of square root of two visualise million visualise square root of two vulgar fractions
W	water lily - Egyptian number symbol website map Welsh words for numbers where roots are found word system - comparison between number systems word system - Chinese financial numbers word system - Chinese standard numbers words for numbers words for numbers counter words - alphabetical order of number words words - big numbers words - counting sheep words - English numbers words - number words in French and German words - songs based on numbers words - special words for numbers word system - numbers as words words having numerical values - Greek
X	X - Roman number symbol for ten xi - Greek number symbol for sixty
Y
Z	zero zero - properties zero - history zero - comparison between number systems zero - Arabic numbers zero - Babylonian numbers zero - bases other than ten zero - binary zero - Chinese financial numbers zero - Chinese standard numbers zero - Chinese rod numbers - none zero - Egyptian numbers - none zero - Greek numbers - none zero - Mayan numbers zero - Roman numbers - none zero - tallies - none zero - types of numbers zeta - Greek number symbol for seven