igsce maths dividing a positive by a negative number - PowerPoint PPT Presentation

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igsce maths dividing a positive by a negative number

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how to use a number line to divide a positive by a negative number – PowerPoint PPT presentation

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Title: igsce maths dividing a positive by a negative number


1
divide positive number by a negative number
using a number line
2
in this lesson
we show how to divide a positive by a negative
number using a number line
you also do an exercise dividing a positive by a
negative number using a number line
3
how do we divide?
dividing by 4
dividing by a positive number
dividing by -4
dividing by a negative number
4
make divisions from 0
examples
-ve
ve
division size -4
facing the positive
-3
-1
-2
follow the arrows
when dividing we get answer by counting
counting backward answer is negative
5
make divisions from 0
examples
-ve
ve
division size -4
facing the positive
follow the arrows
-5
-4
-3
-2
-1
when dividing we get answer by counting
counting backward answer is negative
6
lets do together
7
make divisions from 0
examples
-ve
ve
division size -3
facing the positive
follow the arrows
-1
-5
-4
-3
-2
-6
-7
when dividing we get answer by counting
counting backward answer is negative
8
make divisions from 0
examples
-ve
ve
division size -4
facing the positive
follow the arrows
-4
-7
-8
-9
-2
-5
-3
-1
-6
when dividing we get answer by counting
counting backward answer is negative
9
in the next exercise
you need
a number line
10
exercises
evaluate the following
1.
2.
3.
4.
5.
6.
11
exercises
evaluate the following
1.
2.
3.
4.
5.
6.
12
make divisions from 0
1.
working
-ve
ve
division size -2
facing the positive
-3
-2
-1
follow the arrows
when dividing we get answer by counting
counting backwards answer is negative
13
make divisions from 0
working
2.
-ve
ve
division size -2
facing the positive
-4
-3
-2
-1
follow the arrows
when dividing we get answer by counting
counting backwards answer is negative
14
make divisions from 0
working
3.
ve
-ve
division size -4
facing the positive
-3
-2
-4
-1
follow the arrows
when dividing we get answer by counting
counting backwards answer is negative
15
make divisions from 0
working
4.
-ve
ve
division size -2
facing the positive
-2
-5
-4
-3
-1
-6
-7
follow the arrows
when dividing we get answer by counting
counting backwards answer is negative
16
make divisions from 0
working
5.
-ve
ve
division size -5
facing the positive
follow the arrows
-4
-3
-2
-1
when dividing we get answer by counting
counting backwards answer is negative
17
make divisions from 0
working
6.
-ve
ve
division size -7
facing the positive
follow the arrows
-3
-2
-1
when dividing we get answer by counting
counting backwards answer is negative
18
make divisions from 20
working
-ve
ve
division size -4
facing the positive
follow the arrows
-5
-4
-3
-2
-1
when dividing we get answer by counting
counting backwards answer is negative
19
summary
we showed how to divide a positive by a negative
number using a number line
you also did an exercise dividing a positive by
a negative number using a number line
20
more free maths lessons
at
igscemaths24.thinkific.com
21
working
make divisions from 0
1.
facing the positive
division size 4
5
3
1
2
4
when dividing we get answer by counting
counting forward answer is positive
22
working
1.
make divisions from 20
1
2
3
4
5
when dividing we get answer by counting
counting forward answer is positive
23
working
make divisions from -20
1.
division size 4
facing the negative
-4
-1
-3
-5
-2
when dividing we get answer by counting
counting backward answer is negative
24
working
make divisions from -20
1.
facing the negative
division size -4
5
3
2
4
1
when dividing we get answer by counting
counting forward answer is positive
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