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Chapter 3: Basic Calculations — Basic Keyboard
r Recalls a variable.
Example
• Set C = 8.
8 R A C E
Recall the value of C.
@ r A C E
z Accesses the VARS menu. Refer to chapters 4 and 6 to learn how
to use each item in this menu.
{ } Enter braces to group numbers as a list.
b Recalls the previous answer. Use this key to incorporate the
answer to the previous calculation into an expression.
Example
•Perform 3
× 3.
3 | 3 E
Subtract the value of the
previous answer from “10”.
1 0 - @ b E
Note: b can be considered as a variable; its value is automatically
set when E is pressed. If b is not empty, then pressing
+, -, |, or = will recall “Ans” and places it at
the beginning of an expression. If “1” was the previous answer,
then pressing + 4 E will result in “5”.