Page 32 - WCS - Electrical

WORKSHOP CALCULATION & SCIENCE - CITS

Square root, Ratio and Proportions, Percentage -

Changing percentage to decimal and fraction

1
1
1 1
Conversion of Fraction into Percentage 87 87 1 %
%
1
2
1 2
1 Convert into percentage. 2 2 87 2 1 % 2
2
87
% 2
2
3
1
1
1 1 2 1 2 3 87 1 % 2
3
87
×
100100
1 ×
Solution
2
2 2 Solution = 50 % 2 2 3 3 3 2 % : 30 30 0.3 0.3
=
Solution
:
=
30
2
3
1 × 2
100
3 8
30100
:
× 2 100 3 3 8 8 Solution 100 = = 0.3
0.3
Solution
: 100
1 1 2 3 8 100

30
100
1 1
×
30
100
×
2 Convert into percentage 8 3 24 24 Solution : : 100 = = 0.3 1 1
Solution
1
0.3
2
2
11
24
1 11
%
1 %
24100
11 8 100 100 33 33
33 3
1 % 3
100
1
1 Solution: 11 1 100100 24 100 33 % 3
1
24
×
3
100
1
11 11 1 100 = 100 =× 100 11 100 6 6 1 1 % % 33 33 1 100100
100 = 11
×
33
1 11
11
33

6
100
1
3
×
25
3
3
33 3
3

1 1 11 11 100 = 11 11 100 6 25 % Solution : 33 3 3 100 = 100100 1 × 1 1
1
×
1 =
=
:
=
Solution
100
100
100
1
25
87
3
1 1
100 =
100
3
×
1 100

100 = 2
25 1
3
1
100

6
11
1
=
1
1 2 1 11 × = 9.01 % 6 33 1 2 1 87 1 % 33 Solution : 100100 =100 3 100 = = 100 × 1003 3 × 100
Solution
:100
100
11
11
33
4
1
1
1 4 2
87
%
33

3
2 Convert the following fraction into percentage. 25 33 3 1 3 2 = 3 = 1 3 100 100 100 1 1 3 100
0.333 0.333 100
2
2 4 25 2 Solution : 1 = 3 = = 3 = ×
1 1 4 1 1 3 33 3 Solution : 1 = 3 = 3 = 0.333 = ×
100

100

100
100
× 100 1 1 3 3 1 1 3 30 100 = 3 0.333 3 3 100
=
0.3
=

1 2 1 × 100 4 4 3 5 8 1 33 Solution : 1 100 100100 1 1 3

33
1
1 5 3
30
1 %
1
87 30
:
=
0.3
0.333
33 33
0.3
=
1 2 :
2 × 100 2 2 5 8 3 3 Solution Solution 100 100100 1 = = 3 = = 0.333 1 1
100
2
5
%
33 3
3
3
8
1 %
1 2 1 1 3 24 Solution : 33 3 3 100 = = × × 1 1 3 12 12
1 = 100
:
Solution
=
100
12 2
3

: 100100 1
1 100
3

100
Solution
3
1
% 2
:10033
= %
1 1 11 1 5 5 3 100 24 Solution 100 100 30 = 100 3 100 = = 100 × 1003 3 × 100 12 1 % 2
1
× 100 24 33 1 Solution 3 1 1 1 2
33
1
=
: 1
1
100 33
2
100
12
100
1 11 11 Conversion of Percentage into Fraction : = 3 1 = 3 = 3 100 100 100 0.3 1 % 3 100 12 % %
3 = 100 %
×
33
Solution
8
=
100
1 = 3
× 100 = 1 Convert 24% into fraction. Solution : 100 3 = 100 3 3 3 × 3 2 2
100
100

100

6
100
1
11
11
1 1 100 = 100 100 24 6 1 = 3 3 33 1 100
100 =
×
×
1
100
25
3
6
100
11 11 11 11 11 Solution: = 25 = = 3 1 Solution : 33 1 1 = 33 3 1 = 100 × 100 1
%
33
100
1
100
3 0
10
3 3
100

3

25 1
3
3 :ion
:
100
100
1 4 100 = 1 33 3 1 Solution Solut3 = 100 = = 100 × = 1 3 × 100
1
1
100
3
100
100
×
0.333
1
33
6
1
11 4 1 4 11 2 Convert % into fraction. = = 1 3 = = 0.333 = 1 100 100 1
33
3
33 0.333
=
3
25
3
3
1 1 5 1 33 1 1 100 Solution : 3 3 = 100 = 3 × 100
100
1

1
100
33 3
100
4 5 5 Solution : 33 1 = 33 3 1 = 100 × 100 1 = 1 = 0.333 12 2 % 1
3
3 3

100
10
1
3
3
1 Solution Solution = : 100 3 0 = = 100 × = 100 × 100 3 12 1 % 12 2 %
:
3
100
2
1
5 = 3 100 1 100 3 100
100
1
= 1 = 33 3 3 100 1 12 1 %
3
=
Solution
×
=
:
3
Convert the following percentage into fraction 2
3

100

100
100
1 15%
1
=

1 2 3 87 1 %
2 2 2
3 Conversion of Decimal Fraction into Percentage
1 1 Convert 0.35 into percentage.
× 100 3 30
2 Solution : = 0.3
8 Solution: 0.35 x 100
100
1 = 35%
24
1
11 2 Convert 0.375 into percentage.
%
33
100 3
1 100 Solution: 0.375 x 100
× 100 = 6 = 37.5%
11 11 33 1 100
25 Solution : 3 = 3 = 100 × 1
1 1 100 100 3 100
4 33 3 = 1 = 0.333 19
1 3 CITS : WCS - Electrical - Exercise 3
5 1 100
33 100 1 1
Solution : 3 = 3 = × 12 2 %
100 100 3 100
1
=
3