SLR10 Number Types Flashcards
(19 cards)
What are natural numbers?
Numbers that you use when counting BUT includes zero AND cannot include negative numbers
How can natural numbers be represented?
With a capital N
What are whole numbers?
Whole numbers are negative AND positive integers which can be placed on a number line
How do you represent whole numbers?
With a capital Z
What are rational numbers?
Numbers that can be represented by decimals, ratios and fractions. it CAN include integer values and recurring values
How do you represent rational numbers?
With a capital Q
What are irrational numbers?
Numbers that cannot be represented as a fraction e.g., decimals that are endless like Pi
How do you represent real numbers?
With a capital R
What are real numbers?
These are BOTH rational and irrational numbers AND are use for measurement
Example of natural number:
1
Example of whole number:
-4
Examples of rational numbers:
0.6(recurring), 5/6, 2
Example of irrational numbers?
root 2
Example of real number:
6 or root 7
What are ordinal numbers?
numbers used to describe the position that a value appears at e.g., 1st or 2nd
What is a set?
an unordered collection of data which contains each item no more than once
What can rational numbers also be called?
quotients
What is the key thing to remember about irrational numbers?
they have no set symbol
How are ordinal numbers used in computing?
arrays (index numbers)
