Casio fx-82MS Guide Book

Mastering the Calculator using the Casio fx-82MS 13
Exercise 3
You can use this key for other powers as well. Try these examples
(a) 7
4
(b) 8
10
(c) (0.4)
6
(you do not have to type the brackets in)
(d) (–7)
6
(you need to type the brackets in)
(e) 5
0.4
(f) 5
–4
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Answers:
(a) 2401
(b) 1073741824
(c) 4.096 × 10
–3
or 0.004096 (you move the decimal 3 places to the left)
(d) 117649
(e) 1.903653939
(f) 0.0016 [Just press 5
–4
is the same as
so you could press to get the same answer]
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4.2 Square root
Finding the square root of a number ‘undoes’ or ‘neutralises’ the squaring of the number and
vice versa. The symbol for square root is
(This is called the radical sign)
The square root of 36 is written as
Now because 6
2
= 36, .
Find the square root key on your calculator and type
1
5
4
-----
3
6
36
6
=

Casio fx-82MS Specifications

General

Type	Scientific
Form factor	Pocket
Battery type	AA
Power source	Battery

Weight and Dimensions

Weight	125 g
Dimensions (WxDxH)	18.6 x 85 x 156 mm