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NUMBERS

Numbers are :

add as: 1, 3, 5, 7, 9, ... or even as: 0, 2, 4, 6...

Number Cardinal Ordinal
1 one first
2 two second
3 three third
4 four fourth
5 five fifth
6 six sixth
7 seven seventh
8 eight eighth
9 nine ninth
10 ten tenth
11 eleven eleventh
12 twelve twelfth
13 thirteen thirteenth
14 fourteen fourteenth
15 fifteen fifteenth
16 sixteen sixteenth
17 seventeen seventeenth
18 eighteen eighteenth
19 nineteen nineteenth
20 twenty twentieth
21 twenty-one twenty-first
22 twenty-two twenty-second
23 twenty-three twenty-third
24 twenty-four twenty-fourth
25 twenty-five twenty-fifth
26 twenty-six twenty-sixth
27 twenty-seven twenty-seventh
28 twenty-eight twenty-eighth
29 twenty-nine twenty-ninth
30 thirty thirtieth
31 thirty-one thirty-first
40 forty fortieth
50 fifty fiftieth
60 sixty sixtieth
70 seventy seventieth
80 eighty eightieth
90 ninety ninetieth
100 one hundred hundredth
500 five hundred five hundredth
1,000one thousand thousandth
100,000one hundred thousand hundred thousandth
1,000,000 one million millionth
109 one billion billionth
Hyphenate numbers from 21 through 99.

Fractions:

One half - a half: 1/2
One and a half:1 1/2
Two and a half: 2 1/2
One third, a third: 1/3
Two thirds: 2/3
One quarter, a quarter: 1/4
Three quarters: 3/4
One sixth, a sixth: 1/6
Three and five sixths; 3 5/6
One twelfth: 1/12
Six twelfth: 6/12
One twentieth: 1/20
One thirtieth: 1/30
One eightieth: 1/80
One hundredth: 1/100
One thousandth: 1/1000

Signs:

Operationsign Examples
Written Said
Equality = 2 = 2 Two equals or is two
Difference - 23 - 32 Eight is not equal to nine
Approximation ~ 2.9 and 3 Two point nine is approximately equal to three
Inequalities > 40 > 3 Forty is greater than three
Inequalities < 6 < 4 Six is less than fourteen
>= 11 > = 3 Eleven is greater or equal than three
<= 9 <= 10Nine is less or equal than ten
Addition + 2 + 3 = 5Two plus (or and) three are (or make) five
Multiplication x 2 x 3 = 6Three times four is twelve. Or three fours are twelve
Subtraction - 34 - 20 = 14 Thirty-four minus (or take away) twenty is fourteen. Or Twenty from thirty-four leaves fourteen
Division ÷ or / 30/10 = 3 Thirteen divided by ten is three
Exponent or power 4 2 = 16 4 squared is sixteen
54 = 624 five to the fourth or to the power of four is six hundred and twenty-five
109=1,000,000,000
Square root √sqrt(16) = 4 or -4 The square root of sixteen is four (or minus four)
Degree o 3oThree degrees

Others:

Written Said
60% sixty percent
37 ‰ thirty-seven per thousand
$1,200 one thousand two hundred dollars
£16,486 sixteen thousand four hundred and eighty-six pounds
342kms three hundred and forty-two kilometers
$25.35 twenty-five dollars thirty-five
1999 Nineteen ninety-nine

Sizes:

  • Depth = (0.6)"
  • Length = 10"
  • Width = 7"
  • 1" means: one Inch. 7" seven inches
  • 1’ means: one foot. 12’: twelve feet
  • Surface in square inches or square feet
  • Volume: in cubic inches or cubic feet


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