What are 26 simple facts about numbers from A to Z with simple explanations?

Answer 1

Addition is to find the total sum of 2 or more numbers

Big numbers obey the same rules as little numbers

Composite numbers have more than 2 factors

Decimals are numbers less than 1 and begin with a decimal point

Eleven is a Prime number because it has only 2 factors

Factors are numbers that are divisible into other numbers with no remainder

Greatest common factor reduces fractions to their lowest terms

Hundred is 100 which is a square number because 10*10 = 100

Irrational Numbers can't be expressed as fractions

July is now the 7th month of the year but it once was September in Roman times

Kilo means a thousand which is 1000

Lowest common denominator is needed when adding or subtracting fractions

Multiplication is to times 2 or more numbers to find their product

Number one is not a prime or composite number because it has only 1 factor

Ordinal numbers are in the form of: 1st 2nd 3rd 4th .... etc

Percentage means how many parts of 100 there are as for example 75/100 = 75%

Quantity simple means how mant there are

Roman numerals are: M=100, D=500, C=100, L=50, X=10, V=5 and I=1

Simplifying fractions makes it easier to convert them into decimals or percentages

Ten is 10 but a tenth is 1/10 as a fraction or 0.1 as a decimal

Underneath a fraction is its denominator and above its numerator

Value simply means what's it worth in numbers

Whole numbers are integers without fractions or decimals

X is the symbol for multiplication and is sometimes denoted as *

Years are often notated in Roman numerals

Zero is the most important of the digits of 0 1 2 3 4 5 6 7 8 and 9 because it maintains the positional place value of all numbers as for example it tells us that 207 or 237 is different from 27