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

Answer 1

Above the solidus line of a fraction is its numerator

Beneath the solidus line of a fraction is its denominator

Composite numbers have more than two factors

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

Even numbers are divisible by 2 with no remainders

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

Greatest common factor reduces fractions to their lowest terms

Hindu-Arabic numerals are: 0 1 2 3 4 5 6 7 8 and 9

Irrational Numbers can't be expressed as fractions but rational numbers can

Just add 1 to 12 to make a baker's dozen which is 13

Kilo means a thousand which is 1,000

Lowest common denominator/multiple is needed when adding or subtracting fractions

Multiplying or dividing fraction don't need a common denominator

Negative numbers are less than zero and begin with a minus sign

Odd numbers when divided by 2 always leave a remainder of 1

Prime number has only two factors which are itself and one

Quarter of 1 is 0.25 as a decimal, 1/4 as a fraction and 25% as a percentage

Roman numerals are: I V X L C D and M

Square number is the product of a number multiplied by itself twice as: 5*5=25

Two is the only known even prime number

Units are from 1 to 9

V as a Roman numeral equals 5

Whole numbers or integers do not have fractions or decimals attached to them

X as a Roman numeral equals 10

Years and major sporting events are often notated in Roman numerals

Zero is the most important number of them all because it tells us as for example that 207 is different from 27