Decimal points and commas
•
Numbers less than one should have a single zero before the decimal point. A
comma should be used as the decimal point. In English-speaking countries a dot
on the line is more commonly used, e.g. 0
.
1
°
Cor0,1
°
C, but not
.
1
°
C.
Table 1.7
The most commonly used
SI prefixes
Factor Prefix Symbol
10
12
tera T
10
9
giga G
10
6
mega M
10
3
kilo k
10
2
hecto h
10 deca da
10
−
1
deci d
10
−
2
centi c
10
−
3
milli m
10
−
6
micro
μ
10
−
9
nano n
10
−
12
pico p
10
−
15
femto f