state the two digits (units and ten digits) in the square of any number with 5 as its units digit
Answers
Step-by-step explanation:
By now, you have learned how to square numbers ending in 5. As a quick refresher, let's say you have a number ending in
5
,
and say the first digits make up the number
N
.
Then the digits of the square of this number will begin with
N
(
N
+
1
)
and end with
25.
For example, take a look at
115
2
.
Step One: Identify
N
:
Here, the number before the last digit of
5
is
11
,
so
N
=
11.
Step Two: Calculate
N
(
N
+
1
)
:
Now, we multiply
N
by
N
+
1
,
i.e. we multiply
11
by
11
+
1
:
11
(
11
+
1
)
=
11
(
12
)
=
132
Step Three: Add
25
to the End:
Now, we just tack on a
25
to the end of the
132
to get the answer:
115
2
=
132
25
=
13225
Now that we have the basics down, let's learn now to tackle some harder questions.
Answer:
13225
Step-by-step explanation:
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