manual

Lesson 15: Subtracting Negative Numbers
Victor 700 Calculator Teacher’s Guide
69
TRANSPARENCY
Subtracting Negative Numbers
40 - -10 = ?
12 - -19 = ?
Press these buttons: The calculator shows:
.ON/C.
0.
40 -.
40.
10. +/-.
10.-
=.
50.
----------------------------- ------------------------------
.ON/C.
0.
12 -.
12.
19. +/-.
19.-
=.
31.