Page 21 - Final E- Booklet prim 6(2025) Neat

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Inclusion and subsets
We can say that:
. set of counting numbers is a subset of set of natural
numbers
or set of natural numbers includes set of counting numbers.
. Set of rational numbers is not a subset of set of integers
or set of integers is a subset of set of rational numbers
or set of rational numbers includes set of integers

These numbers are rational and can all be written in the
form a/b:
•2.7 (it can be written as 27/10)
•160 (it can be written as 160/1)
•0.361 (it can be written as 361/1000)

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