WHAT ARE NATURAL NUMBERS?
We call natural numbers to every whole number (those which have no decimals) and every positive number (those which don't have a negative sign in front): 1, 2, 3, 4, 5, 6, 7,………
We can perform operations with natural numbers:
When you subtract or divide, you must be very careful. Sometimes, the results you get might not be natural numbers. For example, when we subtract 6 – 10 = – 4, or when you divide 6 / 10 = 0,6.
We use natural numbers to count: 1, 2, 3, 4,….etc.
Generally, we don't have any problems when dealing with simple numbers.
Write:
- Five thousand [and] five.
- (A) One hundred thousand one hundred
- Four hundred [and] four thousand [and] four.
Answers:
5.005
100.100
404.004
We could have problems with very large numbers as well as very small numbers.
LARGE NUMBERS:
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In the long scale, a thousand million is called a "Milliard" or 1.000.000.000, and "Billion" is used for a million million or 1.000.000.000.000.
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In the short scale, a thousand million is called a "Billion" or 1.000.000.000, and the word "Milliard" is not used. A "Trillion" equals 1.000.000.000.000.
MEGA equals to 106 (a 1 with six zeros behind it), which is to say, one million (1.000.000).
MILLIARD (in long scale) is the natural number written as: 1.000.000.000 and is read as: (one) a thousand million or one billion (in short scale).
GIGA equals to 109 (a 1 with nine zeros behind it), or 1.000.000.000.
TERA equals to 1012 or 1.000.000.000.000 (a 1 with twelve zeros behind it). It is read as: one trillion or a thousand billion (in short scale) and as one billion or a million million (in long scale).
Tera is also a river in the province of Zamora.
Answer the following questions:
1.4 Do you know how to write one billion?
1.5 Write one thousand milliards.
1.6 Write one milliard
1.7 Can you read this quantity 1.000.000.000?
1.8 How many milliards are there in a long scale billion?
Answers:
1.4 1.000.000.000 (short scale) and 1.000.000.000.000 (long scale)
1.5 1.000.000.000.000
1.6 1.000.000.000
1.7 One thousand million or a milliard (long scale)
1.8 One thousand
Answer the following questions:
1.9 How many millions are there in a Billion?
1.10 Is a Billion the same as a Milliard?
1.11 How many Milliards equal a Billion?
1.12 How many thousands make up five million?
1.13 Is it true that a million million equals a Billion?
Answers:
1.9 A thousand in short scale and a million in long scale.
1.10 A short scale Billion is the same as a Milliard, but not in a long scale.
1.11 A short scale Billion is the same as a Milliard. However, in a long scale, one thousand milliards. A milliard is 1.000.000.000 and one thousand milliards: 1.000.000.000.000
1.12 Five thousand. 5.000 X 1.000 = 5.000.000
1.13 In a long scale, it is: 1.000.000 X 1.000.000 = 1.000.000.000.000. On the other hand, in a short scale it isn't: 1.000.000.000.000 equals a Trillion.