Maths
convert 3/40 into decimal form and write their periods and their length
Answers
Answered by
0
Answer:
Explanation:
To convert a fraction into a decimal there are two methods:
→
convert it to a fraction with a power of 10 as the denominator.
→
divide the numerator by the denominator.
The first method is the method of choice for denominators of
2
,
4
,
5
,
8
,
10
,
20
,
25
,
40
,
50
,
80
The second method is easier for denominators of:
3
,
6
,
7
,
9
,
11
,
12
etc because they have factors of
3
,
6
,
7
,
9
,
11
3
40
×
25
25
=
75
1000
=
0.075
As soon as a number is in decimal form, the percent can be read off immediately.
A percent is an amount which is given out of 100. decimal places represents hundredths.
0
.
07
5
=
75
1000
=
7.5
100
=
7
.5
%
Similar questions