Calculator Worksheet (Page 2 of 3) in pdf

Calculator Worksheet Page 2

This would be an incorrect way to evaluate the expression, as your calculator will use

order of operations to do 3 6

4 =

0 1, THEN add the 1 to give 0.9.

One correct way to evaluate the expression would be to hit [=] on your calculator after

entering the top of the fraction:

[1][+][3][ ][6][=] value 4.6, [ ][( )][4][=], value

1 15

Another correct way to evaluate the expression would be to use parentheses to clearly

deﬁne for the calculator where the top and bottom of the fraction are:

[(][1][+][3][ ][6][)][ ][( )][4][=], value

1 15

Another example where order of operations gets in the way is with exponents.

2 1 0 6

EX. 4

The following calculator input would be incorrect:

[4][ ][2][ ][1][ ][0][ ][6][=], value 11.02

2 1

It is incorrect because the calculator will follow order of operations and ﬁnd 4

, then

multiply the result by 0.6.

A correct sequence would be to use parentheses to deﬁne for the calculator what all is

in the exponent:

[4][ ][(][2][ ][1][ ][0][ ][6][)][=], value 5.73

Now do these calculations yourself:

(a) (4 + 3 1

(4 3 + 1 16)

6 3 34

(b)

1+4 51

6 2 33

3 2

14 5

(d)

6 (1 14+2 193)

Calculator Worksheet Page 2