Casio CLASSPAD 330 3.04 - Manual (Page 117)

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2-2-2
Basic Calculations
Using the , Key
Use the , key to input exponential values. You can also input exponential values using the
$ key on the  and keyboards.
Examples: 2.54 s 10 3 = 2540
A
DC,BU
1600 s 10 –4 = 0.16
\ @E??$ CU
Omitting the Multiplication Sign
You can omit the multiplication sign in any of the following cases.
• In front of a function
Examples: 2sin (30), 10log (1.2)
• In front of a constant or variable
Examples: a
P , 2ab, 3ans
• In front of an open parenthesis
Examples: 3(5 + 6), (a + 1)(b – 1)
Note that you must use a multiplication sign when the expression directly in front of the
open parenthesis is a literal variable. Example: ab (3 + b) must be written ab s
Otherwise, your input is considered to be in function notation ( f ( x )).
• In front of the , key or $ key (See “Using the , Key” above.)
• In front of a matrix or list
Examples: a {1, 2, 3}, 3 [[1, 2] [3, 4]]
Using the Answer Variable (ans)
Any time you execute a calculation in the Main application work area, the last result is
assigned automatically to a variable named “ans” (answer). You can even recall current “ans”
variable contents and input them into another calculation by tapping the # key as shown
below.
Example: 123 + 456 = 579 @AB
CDEU
789 – 579 = 210 FGH #U
210 w 7 = 30 FU*
* Starting a calculation expression with +, −, Ч, ч, or ^ operator will cause the “ans”
variable to be inserted automatically to the left of the operator, even if you do not tap
the
# key. For more information, see “Performing Continuous Calculations” on
page 2-2-3.