The document provides instructions for using a scientific calculator. It includes diagrams showing the location of keys like ON, 2nd, DEL, and π. It describes how to access functions by pressing the 2nd button followed by other buttons, like INS, %, or RESET. The document provides examples of performing calculations like addition, subtraction, multiplication, division, using parentheses, finding the last answer, converting percents to decimals, correcting syntax errors, and using left/right arrows.

1. Name________________________________________ Date______________________
Mrs. Labuski & Mrs. Portsmore Per________ Scientific Calculator
Make 3 observations about the calculator.
1.
2.
3.
Practice: Locate the following keys on the calculator by placing
the number on the diagram.
1. ON
2. 2nd
3. DEL
4. x2
5. CLEAR
6. π
7. ^
Locate the following words on your calculator. What buttons are they above?
INS __________________________
% __________________________
RESET __________________________
To access the words you just located you must press the 2nd button, and then
the button underneath that word.

2. A. Reset/Clear Memory
Pressing ON and CLEAR at
the same time also resets
the calculator immediately.
No menu or message is
displayed.
B. Add, Subtract, Multiply, Divide, Equals
Find:
2 + 54 - 6 =
16 × 21 =
78 ÷ 2 =
12 (5 + 6) =
Practice:
1. 6 × 14 ÷ 2 =
2. 26 – 78 =

3. 3. 9 + 45 × 12.5 ÷ 2 =

4. C. Last Answer
Use Last Answer (Ans) to calculate (2+2)2.
D. Percents
To express 72% as a decimal press the following buttons:
72, Your calculator should now read 72%
Now your calculator should now read 0.72.
Practice: Use your calculator to write the following percents as decimals:
4% ___________
83.5% ___________
.05% ___________
110% ___________

5. E. SYNTAX ERROR
Type the following buttons into your calculator:
7,+,+,8, ENTER
What appears on your calculator? Why do you think that happened?
When your calculator reads “_____________” that means you have made a
____________.
While the calculator still reads “SYNTAX Error” press the CLEAR button. Where is the
cursor now?______________________________________________________.
By pressing the CLEAR button the calculator will take you to where the mistake
was. For example, we pressed the plus sign too many times which is why the cursor
is flashing over the second plus sign.
While the cursor is flashing press the DEL button. What happened?
_____________________________________________________________.
Now press ENTER.
Your calculator should now read 15.
The DEL button will erase whatever symbol/number the cursor is flashing over.
Practice: Type the following “incorrect” buttons into your calculator. Use the methods
you just learned to correct your mistake.
You meant to write 8-9, but instead you incorrectly typed 8,-,-,9
You meant to write 20÷4, but instead you incorrectly typed 20,*,/,4
Did you notice that in order to get rid of the multiplication sign you had to press the
left arrow located near the top right corner of the calculator?
The Left/Right arrows allow you to move around in an expression that you typed in.