Sharp EL-5160S, Operation Manual

Page: 160 / 188

E-49
x
– =
t R
x
– =
60
.
4
σ
x
=
t
p
σ
x
= 16
.
48757108
x
=
35
P(t)
?
N 2
35
N 1
) =
0
.
061713
x
=
75 Q(t) ?
N
3
75
N
1
) =
0
.
312061
x
=
85
R(t)
?
N 4
85
N 1
) =
0
.
067845
t
=
1.5
R(t)
?
N 4
1
.
5
)
=
0
.
066807
DRILL MODE
Math Drill:
b 2 0
Math operation questions with positive integers and
0 are displayed randomly. It is possible to select the
number of questions and operator type.
Multiplication Table (
×
Table):
b 2 1
Questions from each row of the multiplication table (1
to 12) are displayed serially or randomly.
To exit DRILL mode, press
b
and select another mode.
Using Math Drill and
×
Table
1. Press
b 2 0
for Math Drill or
b 2
1
for
×
Table.
2. Math Drill : Use
u
and
d
to select the number
of questions (25, 50, or 100).
×
Table : Use
u
and
d
to select a row in the
multiplication table (1 to 12).
3. Math Drill : Use
l
and
r
to select the
operator type for questions (
+
,
−
,
×
,
÷
, or
+−×÷
).
×
Table : Use
l
and
r
to select the order
type (“Serial” or “Random”).
4. Press
e
to start.
When using Math Drill or
×
Table (random order
only), questions are randomly selected and will not
repeat except by chance.