Cardinal numbers – Exercise 530

Listen to the audio and select the right answer.

Shortly after The Library of Congress in the United States was founded, the fire destroyed volumes of its collection. After that, Congress approved the purchase of Thomas Jefferson’s personal library of books for $. Today, The Library of Congress is the largest library in the world. It contains more than items.

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Cardinal numbers — short reference

Number	In words	Comments
1	one	to be remembered
2	two
3	three
4	four
5	five
6	six
7	seven
8	eight
9	nine
10	ten
11	eleven
12	twelve
13	thirteen	end with -teen
14	fourteen
15	fifteen
16	sixteen
17	seventeen
18	eighteen
19	nineteen
20	twenty	round tens end with -ty
21	twenty-one	a hyphen between tens and ones
89	eighty-nine	a hyphen between tens and ones
101	one hundred and one	and after hundred
999	nine hundred and ninety-nine	and after hundred
1,234	one thousand two hundred and thirty-four	a comma after every 3 digits counting from the right do not add and after thousand, million, billion
2,400,560	two million four hundred thousand five hundred and sixty
3,648,820,115	three billion six hundred and forty-eight million eight hundred and twenty thousand one hundred and fifteen