Natural Numbers, Integers, Rational Numbers Worksheet With Answers - Mathematics Secondary Course Page 2
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36MODULE -
1
Number Systems
Algebra
•
identify different types of numbers;
•
express an integer as a rational number;
•
express a rational number as a terminating or non-terminating repeating decimal,
Notes
and vice-versa;
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find rational numbers between any two rationals;
•
represent a rational number on the number line;
•
cites examples of irrational numbers;
•
represent
on the number line;
, 2
, 3
5
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find irrational numbers betwen any two given numbers;
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round off rational and irrational numbers to a given number of decimal places;
•
perform the four fundamental operations of addition, subtraction, multiplication
and division on real numbers.
1.1 EXPECTED BACKGROUND KNOWLEDGE
Basic knowledge about counting numbers and their use in day-to-day life.
1.2 RECALL OF NATURAL NUMBERS, WHOLE NUMBERS
AND INTEGERS
1.2.1 Natural Numbers
Recall that the counting numbers 1, 2, 3, ... constitute the system of natural numbers.
These are the numbers which we use in our day-to-day life.
Recall that there is no greatest natural number, for if 1 is added to any natural number, we
get the next higher natural number, called its successor.
We have also studied about four-fundamental operations on natural numbers. For, example,
4 + 2 = 6, again a natural number;
6 + 21 = 27, again a natural number;
22 – 6 = 16, again a natural number, but
2 – 6 is not defined in natural numbers.
Similarly, 4 × 3 = 12, again a natural number
12 × 3 = 36, again a natural number
4
Mathematics Secondary Course
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