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.