-
怎样读数字
How to read the number
一、听懂美国和英国的货币说法：
1
、美国货币
美国货币由美元
< br>dollar
和美分
cent
组
成，
one dollar
等于
100
cents
。
其纸币
bill
有一、
二、
五、十、二十、五十和一百美元等面
值；硬币（
coin
）有一美分（或
a
penny
）
、五美分（或
a nic
kel
）
、
十美分
（或
a dime
）
和二十五美分
（或
a quarter
）
等。
在数字前加
$$
表示美
元，
如：
$$500
表示五百美元；在数
字后加
C
表示美分，如：
50C
表示
50
美分；表示由美元和美分组
成的钱数时，常用
$$
表示，如：
$$6
．
50
。
2
、英国货币
英国货币由英镑（
pound
）和便士（
pence
）组成，也分为纸币
notes
和硬币
coins
。纸币
有面值五镑、十镑、二十镑和五十镑；而
硬币，即金属货币有一便士、二便士、五便士、十
便士、二十便士、
五十便士和一镑等。
若指一定数额的硬币，通常用
piec
e
，
如
2P
（
pieces
）
；
随身带的硬币可用
change
表示。
100
pence
等于
1 pound
。
在数字前加￡表示多少英镑，
如：
￡
800
为
800
英镑
；在数字后加
P
表示多少便士，如：
5
P
表示五便士（
penny
的复数）<
/p>
；表
示由英镑和便士组成的钱数时通常不说出
pence
，如
3
镑
50
便士可说成￡
3
．
50
或
three
pounds and fifty
。
二、英美数字读法的差异：
<
/p>
有时，同样一个数字，英国人和美国人的读法也不尽相同，这无疑会使本来就棘手的数字<
/p>
雪上加霜。如：部分有一个逗点的数字（四位数）
，英国人用
“thousand”
表示，而美国人则
多用
“hundred”
。
再如，有三个逗点的数字（十位数）
，美式读法
为
“billion”
，而英式读法为
“thousand million”
。
因此，
熟悉英美两种不同的读法对消除数字理解上的歧义是十分必要的。
请看下面的
对照表：
例词
英式
美式
1,900
one
thousand, nine hundred
nineteen hundred
4,000,000,000
four thousand million
four billion
再者，英国英语在百位和十位之间加读
“and”
，
而美国英语往往不
用
“and”
。比如
754
这个
1
/
7
数字。英国
英语读成
seven hundred and fifty-
four
，而美国英语则读为
seven hundred
fifty-four
。
怎样读大数
Reading and
writing whole numbers
Reading and writing whole numbers can
be explained by using the following illustration.
Take a close look and carefully study
it!
(
two hundred thirty
four
) billion (
five hundred
twenty
) million (
two hundred
forty six
)
Recall that the place value for 2, 4,
and 6 are the hundred-thousands, the ten-
thousands, and the
thousands
respectively.
Again, the position
occupied by 2 is the hundred-thousands and putting
a 2 is this position means
that there
are 2 hundred-thousand or
two
hundred
thousand.
In the
same way, putting a 4 in the ten-thousands
position means that there are 4 ten-thousands
or
forty
thousands because 4 tens is forty.
Finally, putting a 6 in the thousands
position means that there are 6 thousands or
six
thousand.
Putting it all together, we have
(
two
hundred
) thousand +
(
forty
) thousand +
(
six
) thousand =
(
two
hundred
+
forty
+
six
)thousand =
(
two hundred forty
six
)thousand =
246
thousand
What gives us the right to just add
two hundred
,
forty
, and
six
?
Try to do
the following:
two hundred cars + forty
cars + six cars.
Would not you agree
that it is equal to two hundred forty six cars?
The above is the same, except that
instead of using cars, we are using thousand.
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7
The
group name, as shown in the illustration, is
'thousands'
In general, it is
unnecessary to say it three times.
When
reading whole numbers, always read the numeral
first, which is
246
and then
the group
name from left to right.
Therefore, we read
(
two
hundred
) thousand +
(
forty
) thousand +
(
six
) thousand as
(
two hundred forty six
)
thousand =
246
thousand.
By the same token, the next
group name, which is 'millions' is read
five hundred twenty
million
=
520
million
The
whole number can be read as:
(
two hundred thirty
four
) billion (
five hundred
twenty
) million (
two hundred
forty six
)
thousand nine
hundred seventy eight =
(
234
) billion
(
520
) million
(
246
)thousand 978
Other examples
355,645 is read three hundred fifty
five thousand, six hundred forty five
16,006,002 is read sixteen millions,
six thousand, six
25,000,000,000 is
read twenty five billion
Knowing place
value and reading and writing whole numbers are
important to understand the
lessons
that will follow. Study them well; It will pay
off!
怎样读小数
How to Read Decimal Place Value
1 ) Locate the decimal point. The first
digit to the right of the decimal point is the
tenths column.
Read the point first and
then the digit. So
fraction with the
digit as the numerator and 10 as the denominator,
2 ) Count the digits to the
right of the decimal point. If the decimal shows
two digits, the second
place past the
decimal point is the hundredths column. You may
read the point and then the two
following digits individually or as a
whole. For example,
eighty-
five.
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