HP HP-10C - Storage Register Arithmetic Exercises; Problems

Section 2: Memory Stack, LAST X, and Data Storage 31
Storage Register Arithmetic Exercises
Keystrokes Display
´•4
Display shows result of
previous calculation.
18O0 18.0000
Stores 18 in R
0
.
3O÷0 3.0000
Divides number in R
0
(18) by 3.
l0 6.0000
Recalls copy of new
number in R
0
.
4O*0 4.0000
Multiplies new number
in R
0
(6.0000) by 4.
l0 24.0000
Recalls copy of new
number in R
0
.
O+0 24.0000
Adds what is in display
(24) to number in R
0
.
l0 48.0000
Recalls copy of new
number in R
0
.
40O-0 40.0000
Subtracts 40 from
number in R
0
.
l0 8.0000
Recalls copy of new
number in R
0
.
Problems
1. Calculate the value of x in the following equation
)01.271.1()75.215.3(3.4
)32.0)46.733.8(()2.54(33.8
×−−
×−÷−
=x
Answer: 20.9104.
A possible keystroke solution is: