May 122012
 

Cardinal number – for counting

Number                                   Word

0                                                  ought

1                                                  one

2                                                  two

3                                                  three

4                                                  four

5                                                  five

6                                                  six

7                                                  seven

8                                                  eight

9                                                  nine

10                                                ten

11                                                eleven

12                                                twelve

13                                                thirteen

14                                                fourteen

15                                                fifteen

16                                                sixteen

17                                                seventeen

18                                                eighteen

19                                                nineteen

20                                               twenty

21                                                twenty-one

30                                               thirty

40                                               forty

50                                               fifty

60                                               sixty

70                                               seventy

80                                               eighty

90                                               ninety

100                                            one hundred

101                                             one hundred and one

1,000                                         one thousand

1,100                                         one thousand and one hundred

10,000                                       ten thousand

1,000,000                                 one million

1,000,000,000                        one billion

 

Ordinal Number – for ranking

How to establish Ordinal Number:

By using “st, nd, rd and th”

Use “st” for number “one”

Use “nd” for number “two”

Use “rd” for number “three”

Use “th” for the rest.

Ordinal Number                               Word

1st                                                            the first

2nd                                                           the second

3rd                                                            the third

4th                                                            the fourth

5th                                                            the fifth

6th                                                            the sixth

7th                                                            the seventh

8th                                                            the eighth

9th                                                            the ninth

10th                                                         the tenth

11th                                                         the eleventh

12th                                                         the twelfth

13th                                                         the thirteenth

14th                                                         the fourteenth

15th                                                         the fifteenth

16th                                                         the sixteenth

17th                                                         the seventeenth

18th                                                         the eighteenth

19th                                                         the nineteenth

20th                                                         the twentyth

21st                                                          the twenty-first

30th                                                         the thirtieth

40th                                                         th fortieth

50th                                                         th fiftieth

60th                                                         th sixtieth

70th                                                         the seventieth

80th                                                         the eightieth

90th                                                         the ninetieth

100th                                                         the hundredth

200th                                                         the two hundredth

101st                                                        the hundred and one

1,000th                                                        the thousandth

1,100th                                                        the thousand and one hundredth

10,000th                                                     the ten thousandth

1,000,000                                                   the one millionth

1,000,000,000th                                       the one billionth

 

Calculations

Symbol                                        Word

+                                                      plus

–                                                       minus

x                                                      multiplied by

:                                                       divided by

=                                                       equal to

.                                                       point

%                                                    percent

 

Specific uses of nunber:

12 = a dozen

100 year = a century

m = meter

cm = centimeter

km = kilometer

g = gram

kg = kilogram

Year in number:

in 1987                      in 19-87: in nineteen eighty-seven

in 2000                      in 2000: in two thousand

in 2010                      in 2000 and 10: in two thousand and ten

 

Exercise: Write the following number

1. 2

2. 22

3. 222

4. 2,000

5. 2,000,000

6. 2nd

7. 22rd

8. 222rd

9. 2,000th

10. 2,000,000th

Solution:

1. 2                             : two

2. 22                           : twenty two

3. 222                        : two hundred and twenty two

4. 2,000                     : two thousand

5. 2,000,000             : two million

6. 2nd                          : (the) second

7. 22rd                                    : (the) twenty second

8. 222rd                      : (the) two hundred and twenty second

9. 2,000th                  : (the) two thousandth

10. 2,000,000th        : (the) two millionth

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