Using & Managing Data and Information

USING & MANAGING DATA
AND INFORMATION

TABLE OF CONTENTS
TABLE OF CONTENTS................................................................................................................2
TASK 1............................................................................................................................................1
TASK 2............................................................................................................................................2
TASK 3............................................................................................................................................3
TASK 4............................................................................................................................................4
TASK 5............................................................................................................................................4
TASK 6............................................................................................................................................5
TASK 7............................................................................................................................................6
TASK 8............................................................................................................................................7
TASK 9............................................................................................................................................8
TASK 10..........................................................................................................................................8
TASK 11..........................................................................................................................................9
TASK 12..........................................................................................................................................9

TASK 1
a) 2.9  First type 2.9
 press multiply button 2 times
 press equals sign for 5 times
 >answer 594.82
b) 5 √32 –  Type 32
 press square root 5 times
 answer 1.12.
c) 1/(1+0.02)^4 –  Press 1
 press divide
 type 1.02
 press equal sign four times
 it will give 0.9238 answer.
d) 500 * 5^-2 –  First type 5
 press multiply two time
 press equal sign
 it will give 25
 press subtract sign
 press multiply
 type 500
 -12500 as answer.
e) 23.15+√50/(0.9875−3.25) –  Subtract denominator
 Type 0.9875
 press minus button
 press equal it will give -2.2625
 press memory (M+).
 Type 50 and press square root button
 gives 7.072 and
1

 Press + and type 23.15
 gives 30.22.
 Press divide button while 30.22 is on screen and
 press MRC button
 press equals
 gives 13.35 as answer.
TASK 2
5 minutes = 2.2
7 minutes = (7 * 2.2) /5
Cost of 7 minute call £3.08
b)
2.20 = 5 minutes
5.28 = (5.28 * 5) / 2.2
Time of call 12 minutes
TASK 3
a)
4 people = 3 hours
1 person takes = 0.75 hours
Extra people time taken = 0.75*2 = 1.5
Time reduced due to additional 2 people 1.5 hours
Time taken by 6 people = 3- 1.5 = 1.5 hours
6 people has been involved in taking 1.5 hours to paint wall.
b)
12 men takes 5 days to complete 200 m
20 men to complete 400 m
12 men in 1 day complete = 40 m
20 men in 1 day will complete =
(20 men*40m )/12
men
66.66667 m
days to complete 400 m 400m /66.66667
6 days
2