Calculator Skills 1Spring 2006

TI 30X IIS Calculator Skills

Objective: To learn how to use the calculator for arithmetic operations

Calculator Skills 2Spring 2006

FLO SCI ENG

Set the mode of the calculator to Float.

Select the yellow 2nd key 1st row 1st column then SCI/ENG key 1st row, 2nd column.Move the arrow keys to select FLO, then press ENTER, 9th row, 5th column.

Calculator Skills 3Spring 2006

3 – 54 + 5 – 46.

To evaluate, use the binary addition and subtraction keys

- key, 7th row, 5th column + key, 8th row, 5th column .

Evaluate an addition expression.

is keyed in as

3, -, 54, +, 5, ENTER

3 - 54 + 5

3 - 54 + 5

- 46

Calculator Skills 4Spring 2006

To evaluate, use the binary multiplication key

x key, 6th row, 5th column.

Evaluate a multiplication expression.

is keyed in as

17, x, 23, ENTER

17 x 23

17 x 23

391

17 * 23 391.

Calculator Skills 5Spring 2006

To evaluate, use the binary division key

key, 5th row, 5th column.

Evaluate a division expression.

is keyed in as

78, , 4, ENTER

19.5

78 4

78 4

78 / 419.5

Calculator Skills 6Spring 2006

Calculator Skills 7Spring 2006

To evaluate, use the parenthesis keys

( key, 5th row, 3rd column ) key, 5th row, 4th column .

Evaluate an arithmetic expression.

is keyed in as

13, (, 5, +, 7, ), ENTER

13 x (5 + 7)

156

13 x (5 + 7)

13 * (5+7) 156.

Calculator Skills 8Spring 2006

To subtract signed numbers use the binary subtraction - key, 7th row, 5th column.

Evaluate an arithmetic expression.

is keyed in as

7, -, 5, ENTER

7 - 5

7 - 5

2

7 – 5 2.

Calculator Skills 9Spring 2006

To add signed numbers use the opposite (-) key, 9th row, 4th column.

Evaluate an arithmetic expression.

is keyed in as (-), 2, +, 11, ENTER

9

- 2 + 11

- 2 + 11

– 2 + 11 9.

Calculator Skills 10Spring 2006

To add signed numbers use the opposite (-) key, 9th row, 4th column, then binary subtraction - key, 7th row, 5th column.

Evaluate an arithmetic expression.

is keyed in as

(-) , 20, -, 50, ENTER

-70

- 20 - 50

- 20 - 50

-20 – 50 - 70.

Calculator Skills 11Spring 2006

Check BoxExpression Evaluation

80 – 100 =

-60 + 90 =

-210 - 80 =

60 - 50 =

97 - 155 =

Calculator Skills 12Spring 2006

Check BoxExpression Evaluation

80 – 100 = -20

-60 + 90 = 30

-210 - 80 = -290

60 - 50 = 10

97 - 155 = -58

Calculator Skills 13Spring 2006

7(8 – 10) -14.

is keyed in as

7, (, 8, -, 10, ), ENTER-14

7(8 10)

Evaluate an arithmetic expression.

7(8 10)

Calculator Skills 14Spring 2006

is keyed in as (, 6, (, (-), 3, ), +, 5, (, (-), 2, ), ), , (, 3, -, 10,), ENTER

4

Evaluate an arithmetic expression.

6( 3) (5)( 2)

3 10

(6(-3)+5(-2))/(3-10) 4.

Calculator Skills 15Spring 2006

To do percent use the 2nd key and % key, 1st row, 1st column.5th row, 3rd column.

Evaluate a percent expression.

20% of 380 is keyed in as 20, 2nd, %, 380, ENTER

PC Hardware is having a 20% off sale. What is the discount for a mower marked $380?

$76 discount

20%380 76.

Calculator Skills 16Spring 2006

To raise a number to a power use the ^ key,

5th row, 1st column.

Evaluate an exponential expression.

34 is keyed in as

3, ^, 4, ENTER81

43 3^4 81.

Calculator Skills 17Spring 2006

To square a number use the x2 key,

6th row, 1st column.

Evaluate an exponential expression with an exponent of 2.

32 is keyed in as 3, x2, ENTER

9

23 3 2

9.

Calculator Skills 18Spring 2006

To evaluate a negative expression use the (-) key,

9th row, 4th column.

Use of the calculator to evaluate an exponential expression.

-32 is keyed in as (-), 3, x2, ENTER

-9

23 -32

-9.

Calculator Skills 19Spring 2006

To evaluate (-3)2 usethe ( key, and ) key

5th row, 3rd and 4th column.

Use of the calculator to evaluate an exponential expression.

(-3)2 is keyed in as (, (-), 3, ), x2, ENTER

9

2( 3) (-3)2

9.

Calculator Skills 20Spring 2006

Check Box

Expression Evaluation

34 =

32 =

-32 =

(-3)2 =

Calculator Skills 21Spring 2006

Check Box

Expression Evaluation

34 = 81

32 = 9

-32 = -9

(-3)2 = 9

Calculator Skills 22Spring 2006

Check Box

Expression Evaluation

(-6)2 =

(-8.2)4 =

70 =

-62 =

Calculator Skills 23Spring 2006

Check Box

Expression Evaluation

(-6)2 = 36

(-8.2)4 = 4521.2176

70 = 1

-62 = -36

Calculator Skills 24Spring 2006

Check Box

Expression Evaluation

-8.24 =

8.60 =

(-3.1)3 =

-3.13 =

Calculator Skills 25Spring 2006

Check Box

Expression Evaluation

-8.24 = -4521.2176

8.60 = 1

(-3.1)3 = -29.791

-3.13 = -29.791

Calculator Skills 26Spring 2006

To raise a number to a negative power use the ^ key, and (-) key

Use of the calculator to evaluate an exponential expression.

3-4 is keyed in as

3, ^, (-), 4, ENTER.012345679

43 3 ^ – 4

0.012345679

Calculator Skills 27Spring 2006

Use a Calculator

Expression Evaluation

8-2 =

-6-4 =

(-6)-4 =

.08-5 =

Calculator Skills 28Spring 2006

Use a Calculator

Expression Evaluation

8-2 = .015625

-6-4 = -.000771605

(-6)-4 = .000771605

.08-5 = 305,175.7812

Calculator Skills 29Spring 2006

Method 1: To multiply a number in scientific notation use the ^ key, 5th row, 1st column.

Use calculator to evaluate:

(6.3 x 108)(4.2 x 109) is keyed in as 6.3, x,10,^,8, x, 4.2, x, 10 ^ 9, Enter.

(6.3 x 108)(4.2 x 109)6.3*10^8*4.2*10^9

2.646x10 18

Calculator Skills 30Spring 2006

Method 1: To multiply a number in scientific notation use the ^ key, 5th row, 1st column.

Use calculator to evaluate:

(6.3 x 108)(4.2 x 109) is keyed in as 6.3, x,10,^,8, x, 4.2, x, 10 ^ 9, Enter.

(6.3 x 108)(4.2 x 109)

The Calculator screen shows:6.3 * 10^8 * 4.2 * 10^9 2.646 x 1018

6.3*10^8*4.2*10^9

2.646x10 18

Calculator Skills 31Spring 2006

Method 2: To multiply a number in scientific notation use the EE key, 5th row, 2nd column.

Use calculator to evaluate:

(6.3 x 108)(4.2 x 109) is keyed in as 6.3, EE, 8, x, 4.2, EE, 9, Enter.

(6.3 x 108)(4.2 x 109)

2nd key

6.3E8*4.2E9

2.646x10 18

Calculator Skills 32Spring 2006

Method 2: To multiply a number in scientific notation use the EE key, 5th row, 2nd column.

Use calculator to evaluate:

(6.3 x 108)(4.2 x 109) is keyed in as 6.3, EE, 8, x, 4.2, EE, 9, Enter.

(6.3 x 108)(4.2 x 109)

2nd key

The Calculator screen shows:6.3E8 * 4.2E9 2.646 x 1018

6.3E8*4.2E9

2.646x10 18

Calculator Skills 33Spring 2006

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011)

Calculator Skills 34Spring 2006

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011)Method 1: To multiply a number in scientific notation use the ^ key, 5th row, 1st column.

8.6*10^15*3.4*10^11

2.924x10 27

Calculator Skills 35Spring 2006

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011)Method 1: To multiply a number in scientific notation use the ^ key, 5th row, 1st column.

(8.6 x 1015)(3.4 x 1011) is keyed in as 8.6, x,10,^,15, x, 3.4, x, 10 ^ 11, Enter.

8.6*10^15*3.4*10^11

2.924x10 27

Calculator Skills 36Spring 2006

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011)Method 1: To multiply a number in scientific notation use the ^ key, 5th row, 1st column.

(8.6 x 1015)(3.4 x 1011) is keyed in as 8.6, x,10,^,15, x, 3.4, x, 10 ^ 11, Enter.

The Calculator screen shows:8.6 * 10^15 * 3.4 * 10^11 2.924 x 1027

8.6*10^15*3.4*10^11

2.924x10 27

Calculator Skills 37Spring 2006

Method 2: To multiply a number in scientific notation use 2nd key the EE key, 5th row, 2nd column.

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011) is keyed in as 8.6, EE, 15, x, 3.4, EE, 11, Enter.

(8.6 x 1015)(3.4 x 1011)8.6E15*3.4E11

2.924x10 27

Calculator Skills 38Spring 2006

Method 2: To multiply a number in scientific notation use 2nd key the EE key, 5th row, 2nd column.

9. Use calculator to evaluate:

(8.6 x 1015)(3.4 x 1011) is keyed in as 8.6, EE, 15, x, 3.4, EE, 11, Enter.

(8.6 x 1015)(3.4 x 1011)

The Calculator screen shows:8.6E15 * 3.4E11

2.924 x 1027

8.6E15*3.4E11

2.924x10 27

Calculator Skills 39Spring 2006

Use calculator to evaluate a square root.

56644

Calculator Skills 40Spring 2006

To find the square root of a number, use 2nd key in row 1 column 2, key in row 6 column 1.

Use the calculator to evaluate a square root.

is keyed in as 2nd, , 56644, ENTER

56644

5664456644)(

238.

238