1. How to use a calculator Try to type in your calculator as written 25 =
25 = 5
Try to type in your calculator as written
You want to use the same calculator everyday.
My calculator uses an (equal, enter) button.
To solve, I must punch (number, ) first and then the (number, ).
Physics 103 Pt 2

2. Calculators follow the Mathematical Order of Operation
Please Excuse My Dear Aunt Sally Parenthesis Exponents Multiply and Divide Add and Subtract
A calculator sees the problem “2 + 4 x 6 = ___ as “2 + (4 x6) = 26” because multiplying is done first.
Physics 103 Pt 2

3. To make the calculator add first, I must:
Calculators follow the order of mathematical operation unless told otherwise.
Use parenthesis (2 + 4) or press = or ENTER after 2 + 4
To calculate, punch “10 (x, ÷) 2, then (x, ÷) 5” 10
2 x 5
Physics 103 Pt 2

4. 2 + 42 = (36, 18) because (adding, squaring) is performed first.
1 km
? km = 6000 cm x x =
= (36, 18) because (adding, squaring) is performed first.
Single variable functions are always performed first in a calculator.
x2, , yx, sin, cos, tan, log, EE, x-1, Λ
To calculate “log 100 = ___”, I must type (100, log) first.
Depends on calculator!
0.06 km
100 cm
1000 m
Physics 103 Pt 2

5. Practice Calculation
200 + [2 x (4 + 6)]3=
8200
Physics 103 Pt 2