Managing Data And Information - Desklib

Managing Data And
Information

TABLE OF CONTENTS
TASK 1............................................................................................................................................3
The steps for reaching the results about how calculated.............................................................3
TASK 2............................................................................................................................................3
TASK 3............................................................................................................................................4
TASK 4............................................................................................................................................4
TASK 6............................................................................................................................................4
TASK 7............................................................................................................................................4
TASK 8............................................................................................................................................7
TASK 9............................................................................................................................................7
TASK 10..........................................................................................................................................7
CONCLUSION................................................................................................................................8
REFERENCES................................................................................................................................1

TASK 1
The steps for reaching the results about how calculated
A. 1.64
For calculating this numbers 164 and 100 and function key of division (/) will be pressed
in form [164/100 ]. After that enter key will be pressed to gain answer.
B. √7865
For solving this first number will be entered using buttons 7, 8,6 and 5. After that square
root button denoted as √ will be pressed = 88.68
C. 1/ (1 + 0.7) 3
This equation will be solved using BODMAS rule. On calculator brackets will be used along
with the number buttons 1, 3 and 0.7. For pressing 0.7 decimal button (.) will also be used. At
first 1 will be pressed. Since in denominator two products are to be multiplied one more
bracket will be used which will have buttons 1 + 0.7 and a closing bracket. Thus following
sequence of keys will be pressed on calculator:
1/ [(1 + 0.7)* 3]. Then pressing enter key will yield the result: 0.19607
D. 2500 * 5-2
As per bodmas rule at first multiplication is solved and then subtraction will be
performed. To avoid any mistake brackets are used on calculator. At first bracket key is
pressed and then numbers 2500, multiplication key * and number 5 is pressed following a
closed bracket. Then subtraction key (-) and number 2 is pressed. Thus following
expression will be pressed on calculator: (2500*2) -2. Then after pressing enter 12498
will be obtained.
E. 347.18 + √343 0.437 - 2.28
For this operation number keys and decimal key will be pressed along with function keys
+ , - and √ . At first number 347.18 + is entered. Then brackets are used so that in
brackets √3430.437 can be written. After closing bracket – and 2.28 are pressed. It will
result in answer 403.469

TASK 2
a. While this have been given that,
5 min =2.90
x min = 7.86
With having the cross multiplication
X min = 7.86* 5 min / 2.90
X = 13.55
= 14.0
Therefore, x = 14 min
So, he will make of 14 min long
b. While this have been given that,
That buyer make the 240 monthly payment of €675
So, 240* €675
= 1,62,000
Here, the total monthly required with €600 per months that can be
= 1,62,000/ €600
= 270 months.
TASK 3
I. 53*55 / 52
= 58/52
= 56
II. 10 - 4*10 - 6 *103
10-4-6+3
= 10-7 or 1/ 107
III. (1/2)2 * (1/2)5
= (1/2)7
IV. 2- 3 / 2 - 5
= 2- 3+5