Lesson 4: Subtraction
Victor 900 Calculator Teacher’s Guide
14
TRANSPARENCY
Subtraction
9 - 5 = ?
8 - 1 - 2 = ?
Press these buttons:
The calculator shows:
.
ON/C
.
0.
9 -
.
9.
5
.
5.
=
.
4.
-----------------------------
------------------------------
.
ON/C
.
0.
8 -
.
8.
1
.
1.
-
.
7.
2
.
2.
=
.
5.
