HP 17bII User's Manual | Page 39
2:
Arithmetic
39
File name : English-M02-1-040308(Print).doc Print data : 2004/3/9
In the second case, the / key acts like the = key by displaying the
result of 750 x 12.
Here’s a longer chain calculation.
456 - 75
68
18.5
1.9
×
This calculation can be written as: 456
− 75 ÷ 18.5 x 68 ÷ 1.9.
Watch what happens in the display as you key it in:
Keys: Display:
456 - 75 /
18.5 *
68 /
1.9 =
Using Parentheses in Calculations
Use parentheses when you want to postpone calculating an
intermediate result until you’ve entered more numbers. For example,
suppose you want to calculate:
30
x 9
85 -12
If you were to key in 30 / 85 -, the calculator would calculate the
intermediate result, 0.35. However, that’s not what you want. To de-
lay the division until you’ve subtracted 12 from 85, use parentheses:
Keys: Display: Description:
30 /( 85-
No calculation is done.
12 )
Calculates 85
− 12.
* 9
Calculates 30 / 73.
=
Calculates 0.41x 9.
v
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