HP 12C Financial 12C Keying in Negative Numbers (), Chain Calculations in ALG Mode, –75, –13.54, –532.50, 238 Appendix B: Algebraic Mode (ALG)

238 Appendix B: Algebraic Mode (ALG)

Keystrokes	Display
(ALG mode)
90.89}	–13.54	}completes the calculation.
65gr§12}	96.75	New calculation: 65	⋅12
z3.5}	27.64	Calculates 96.75 ÷ 3.5

You can also do long calculations without pressing } after each intermediate calculation: just press it at the end. The operators perform from left to right, in the order you enter them.

Keying in Negative Numbers ()

The Þkey changes the sign of a number.

zTo key in a negative number, type that number and then press Þ.

zTo change the sign of an already displayed number, press Þ.

Keystrokes	Display
(ALG mode)
OO	0.00	Clears any pending operations.
75Þ	–75.	Changes the sign of 75
§7.1}	–532.50	Multiplies –75 by 7.1

Chain Calculations in ALG Mode

To do a chain calculation, you don’t need to press } after each operation, but only at the very end.

For instance, to calculate 750x12 you can enter either: 360

z750 §12 }z360 }or

z750 §12 z360 }

In the second case, the zkey acts like the }key by displaying the result of 750 × 12.

Here’s a longer chain calculation: 456 − 75 ⋅ 68 18.5 1.9

This calculation can be written as: 456 – 75 ÷ 18.5 × 68 ÷ 1.9. Watch what happens in the display as you key it in:

File name: hp 12c pt_user's guide_English_HDPMF123E27	Page: 238 of 275
Printed Date: 2005/8/1	Dimension: 14.8 cm x 21 cm