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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.