Name:
Percent
Decimal
Fraction
1%
0.01
1/
100
5%
0.05
1/
20
10%
0.1
1/
10
A right angle is an angle
whose measure is 90°.
12.5 or 12 ½ %
0.125
1/
8
20%
0.2
1/
5
An obtuse angle is an angle
whose measure is more
than 90°, but less than
180°
25%
0.25
1/
4
33.3 or 33 1/3 %
0.33…
1/
3
50%
0.5
1/
2
75%
0.75
3/
4
80%
0.8
4/
5
90%
0.9
9/
10
99%
0.99
99/
100
100%
1.0
1 whole
An acute angle is an angle
whose measure is less than
90°
A straight angle is an
angle whose measure is
180°
A reflex angle is an angle
whose measure is more
than 180°
HM
TM
Hundreds of
Millions
Tens of
Millions
M
HTH
TTH
TH
H
T
U
Millions
Hundreds of
Thousands
Tens of
Thousands
Thousands
Hundreds
Tens
Units
.
th
h
th
tenths
hundredths
thousandths




The mean where you add up all the numbers and then divide by the number of values
The median is the "middle" value in the list of numbers. To find the median, your numbers have
to be listed in numerical order, so you may have to rewrite your list first.
The mode is the value that occurs most often. If no number is repeated, then there is no mode
for the list.
The range is just the difference between the largest and smallest values.
Ad
ddition
increase
together
sum
more
plus
add
total
and
Subtraction
difference
between
subtract
fewer
decrease
minus
take from
reduce
take away
Division
divided
by
share
divide
share
equally
divisible
by
divide
into
group
Multiplication
multiplied by
multiply
product
groups of
lots of
times table
times
12 hour times into 24 hour times
Examples:
Can you see that morning times in 24 hour format stay the same?
8.00am becomes 0800 hrs
7.45 a.m. becomes 0745 hrs
10.50 am becomes 1050 hrs
But for afternoon and evening times you always add on 12 hours:
2.00pm becomes 1400 hrs
5.15 p.m. becomes 1715 hrs
10.50 p.m. becomes 2250 hrs