The set of numbers below are an example of cardinal numbers:

• Fourth

  Ninth

  Twelfth

  Fifteenth

  Twenty-Sixth

• Five

  Eleven

  Twenty

  Thirty four

  Eighty

Answer explanation

Remember that cardinal numbers are numbers that say how many of something there are.

The set of numbers below are an example of ordinal numbers:

• 3rd

  10th

  8th

  17th

  23rd

• 13

  15

  21

  32

  100

Answer explanation

Remember that ordinal numbers are numbers that tell the position of something in a list.

Write the year correctly:

1945

Answer explanation

Years are normally divided into two parts.

"Nineteen forty-five"

Write the year correctly:

1900

Answer explanation

When a year ends in 00 then the year is said as the digits before 00, and then hundred.

"Seventeen hundred"

Write the year correctly:

1506

Answer explanation

When a year ends in a number between 01 and 09, then that last part is pronounced as the name of the letter O + number.

"Fifteen o six"

"Fifteen oh six"

Write the year correctly:

2009

Answer explanation

For the years 2001 to 2010, we normally say two thousand and + number.

"Two thousand and nine"

Write the year correctly:

2019

Answer explanation

For the first years after 2010, you may hear two different versions.

"Two thousand and nineteen"

"Twenty nineteen"

What time is it?

Answer explanation

"It is eleven o'clock"

Tags

CCSS.L.1.1J

CCSS.L.2.1F

CCSS.L.8.1C

CCSS.L.K.1D

What time is it?

Answer explanation

"It is half past two"

"It is two thirty"

Tags

CCSS.1.MD.B.3

What time is it?

Answer explanation

"It is a quarter to six"

Tags

CCSS.L.1.1J

CCSS.L.2.1F

CCSS.L.8.1C

CCSS.L.K.1D