Lesson 3: Addition
Victor 900 Calculator Teacher’s Guide
10
TRANSPARENCY
Addition
1 + 2 = ?
1 + 3 + 5 = ?
Press these buttons:
The calculator shows:
.
ON/AC
.
0.
1 +
.
1.
2
.
2.
=
.
3.
-----------------------------
------------------------------
.
ON/AC
.
0.
1 +
.
1.
3
.
3.
+
.
4.
5
.
5.
=
.
9.
