# 15 predecessor, successor and skip counting

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Consider the number 132
what is the number that comes
just before 132?
Yes, it is 131
Now what is the number that comes
just after 132?
It is very easy
it is 133
here 131 is the predecessor of 132 and
133 is the successor of 132.
So the predecessor of a number is the
number that comes just before the number.
That is 1 less than the number
The successor of a number is the
number that comes just after the number.
That is 1 more than the number.
Let us look at some examples
consider a 4 digit number
2376.
It's predecessor is 2376-1
that is = 2375.
The successor of 2376 is 2376+1
that is 2377.
Hello friends!
I am Nisha.
Look at this number line ,
I am going to use it to understand what
number comes before and what number
comes after a particular number
consider the number 15
the number just on the left of it is 14
so the number 14 comes before
the number 15
and the number just on the right of 15 is 16
so the number 16 comes after
the number 15
so I can say that the number before any
number can be obtained by subtracting
one from it
and the number after any number
can be obtained by adding one to it.
Here 14 is obtained by subtracting
one from 15
and 16 is obtained by adding 1 to 15.
Hello friends!
I am Priya.
I am going to tell you about skip counting.
Skip counting is the counting of numbers
by jumping one or more numbers.
Let us learn skip counting in 4's
starting from the number 0.
Let me take this number line
in skip counting in 4's starting from 0
I have to jump 4 times
like this.
Now I am at 4
next the same procedure
will be followed,
like this
so we can lift the marked numbers
as 0, 4, 8, 12 and so on.
See in skip counting, in 4s the next
number is obtained by adding 4 to the
previous number.