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4.
Multiplication
and Division check
*
Capacity: Same as for Multiplication and Division.
After Multiplication (Division) is carried out, get the
multiplier
(dividend)
to
check
the product (quotient).
Multiplication check
Ex.4-12x3*=6
2:
mUltiplicand
3:
multiplier
6
:
product
(to
be checked)
Steps
:
Operation
Display
Note
1
0e
Tabulation dial
2
(0
0
3
2
2
4
~
2
~ lamp
on
5
3
3
6
@l
6
~
lamp off
7
(f)
6
(f)
lamp
on
8
El
2
9
§J
3
*
(f)
lamp off
Note:
When the
number
3 at step 9 is
equal
to a multiplier 3* in above
expression,
the calculation is correct.
When the number 4
is
read in by mistake
instead
of
3
at
step
5, the
number
4 is
displayed at step 9. As the number 4 should be a
multiplier 3*,
we can
find that product 8 is not correct
.
Ex
.
4-2
12* -;- 2
= 6
12
:
dividend
2
:
divisor
6
:
quotient
Steps
:
Operation
Display
Note
1
0
e
Tabulation dial
2
0
0
3
12
12
4
If)
12
(f)
lamp
on
5
2
2
11
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