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Grade 7 Maths notes

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Chapter i doctng
Wth Whole Numbers
hhole Numberó Co,j2,3,*,5,)
a NaturalNumbers Cl;a345;6j)
too)
C-5;-4-3,-2j-,O;+i;t3t3,...y
to
3Inteqers (Co
wrtten
that can be
number
4. ational Numbers (ay
froction)
* Notes
to
remember
all
numbers
Oatura number is a whole umber, but not, whole
natural numbers becauseO i5 not a roctural number.
are
atural oumber and
hole number is an
is an expression of numbers Cpositive, neutral
negctive); 0 is the only neutral number.
’ All rational numberS Can be wtten
fraction.
An integer
’ An
Every inteqer, whole umber and ratural number is a rationa
Dumber
femeber thct
->
herekoe
Can be
5.
Doubing
Douting
and
2 can also
be
wrtten as
whole number when represented as a friction
nunber
hat
hairg
Qurnbers.
’ 2 Or x
6. Duision is called the
inverse
of mutiplication.
Multipl1cation is called the insese of civision.
Maltipl cation and divi Sion are inverse
opantho.
Sun add
Ters and Chits
and
Comparing
to Ss, (Os, 00s
7.
Whole Numbers
and lo00s.
and rounding
down
8. factors, Prime Nambers and Common
Lfactors
t Pime
Tne
whole
a
number,
nunbers that
are
Multiples
multiplied to forrm
NumbeS >
’ A number that cannot be expressed as
the product of tuwcs whole oumbers, exept
aS the product of l and the numter
ikself
+Take note
of the
Louest Cormmon
Common fogtor CHCF) and the
Mukiple CLCM).
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