1. Spring 2006Calculator Skills1 TI 30X IIS Calculator Skills Objective: To learn how to use the calculator for arithmetic operations

2. Spring 2006Calculator Skills2 FLO SCI ENG Set the mode of the calculator to Float. Select the yellow 2nd key 1 st row 1 st column then SCI/ENG key 1 st row, 2 nd column. Move the arrow keys to select FLO, then press ENTER, 9 th row, 5 th column.

3. Spring 2006Calculator Skills3 3 – 54 + 5 – 46. To evaluate, use the binary addition and subtraction keys - key, 7 th row, 5 th column + key, 8 th row, 5 th column. Evaluate an addition expression. is keyed in as 3, -, 54, +, 5, ENTER 3 - 54 + 5 - 46

4. Spring 2006Calculator Skills4 To evaluate, use the binary multiplication key x key, 6 th row, 5 th column. Evaluate a multiplication expression. is keyed in as 17, x, 23, ENTER 17 x 23 391 17 * 23 391.

5. Spring 2006Calculator Skills5 To evaluate, use the binary division key key, 5 th row, 5 th column. Evaluate a division expression. is keyed in as 78,, 4, ENTER 19.5 19.5

6. Spring 2006Calculator Skills6

7. Spring 2006Calculator Skills7 To evaluate, use the parenthesis keys ( key, 5 th row, 3 rd column ) key, 5 th row, 4 th column. Evaluate an arithmetic expression. is keyed in as 13, (, 5, +, 7, ), ENTER 13 x (5 + 7) 156 13 * (5+7) 156.

8. Spring 2006Calculator Skills8 To subtract signed numbers use the binary subtraction - key, 7 th row, 5 th column. Evaluate an arithmetic expression. is keyed in as 7, -, 5, ENTER 7 - 5 2 7 – 5 2.

9. Spring 2006Calculator Skills9 To add signed numbers use the opposite (-) key, 9 th row, 4 th column. Evaluate an arithmetic expression. is keyed in as (-), 2, +, 11, ENTER 9 - 2 + 11 – 2 + 11 9.

10. Spring 2006Calculator Skills10 To add signed numbers use the opposite (-) key, 9 th row, 4 th column, then binary subtraction - key, 7 th row, 5 th column. Evaluate an arithmetic expression. is keyed in as (-), 20, -, 50, ENTER -70 - 20 - 50 -20 – 50 - 70.

11. Spring 2006Calculator Skills11 Check Box ExpressionEvaluation 80 – 100 = -60 + 90 = -210 - 80 = 60 - 50 = 97 - 155 =

12. Spring 2006Calculator Skills12 Check Box ExpressionEvaluation 80 – 100 = -20 -60 + 90 = 30 -210 - 80 = -290 60 - 50 = 10 97 - 155 = -58

13. Spring 2006Calculator Skills13 7(8 – 10) -14. is keyed in as 7, (, 8, -, 10, ), ENTER -14 Evaluate an arithmetic expression.

14. Spring 2006Calculator Skills14 is keyed in as (, 6, (, (-), 3, ), +, 5, (, (-), 2, ), ),, (, 3, -, 10,), ENTER 4 Evaluate an arithmetic expression. (6(-3)+5(-2))/(3-10) 4.

15. Spring 2006Calculator Skills15 To do percent use the 2 nd key and % key, 1 st row, 1 st column. 5 th row, 3 rd 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.

16. Spring 2006Calculator Skills16 To raise a number to a power use the ^ key, 5 th row, 1 st column. Evaluate an exponential expression. 3 4 is keyed in as 3, ^, 4, ENTER 81 3^4 81.

17. Spring 2006Calculator Skills17 To square a number use the x 2 key, 6 th row, 1 st column. Evaluate an exponential expression with an exponent of 2. 3 2 is keyed in as 3, x 2, ENTER 9 3 2 9.

18. Spring 2006Calculator Skills18 To evaluate a negative expression use the (-) key, 9 th row, 4 th column. Use of the calculator to evaluate an exponential expression. -3 2 is keyed in as (-), 3, x 2, ENTER -9 -3 2 -9.

19. Spring 2006Calculator Skills19 To evaluate (-3) 2 use the ( key, and ) key 5 th row, 3 rd and 4 th column. Use of the calculator to evaluate an exponential expression. (-3) 2 is keyed in as (, (-), 3, ), x 2, ENTER 9 (-3) 2 9.

20. Spring 2006Calculator Skills20 Check Box ExpressionEvaluation 3 4 = 3 2 = -3 2 = (-3) 2 =

21. Spring 2006Calculator Skills21 Check Box ExpressionEvaluation 3 4 = 81 3 2 = 9 -3 2 = -9 (-3) 2 = 9

22. Spring 2006Calculator Skills22 Check Box ExpressionEvaluation (-6) 2 = (-8.2) 4 = 7 0 = -6 2 =

23. Spring 2006Calculator Skills23 Check Box ExpressionEvaluation (-6) 2 = 36 (-8.2) 4 = 4521.2176 7 0 = 1 -6 2 = -36

24. Spring 2006Calculator Skills24 Check Box ExpressionEvaluation -8.2 4 = 8.6 0 = (-3.1) 3 = -3.1 3 =

25. Spring 2006Calculator Skills25 Check Box ExpressionEvaluation -8.2 4 = -4521.2176 8.6 0 = 1 (-3.1) 3 = -29.791 -3.1 3 = -29.791

26. Spring 2006Calculator Skills26 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 3 ^ – 4 0.012345679

27. Spring 2006Calculator Skills27 Use a Calculator ExpressionEvaluation 8 -2 = -6 -4 = (-6) -4 =.08 -5 =

28. Spring 2006Calculator Skills28 Use a Calculator ExpressionEvaluation 8 -2 =.015625 -6 -4 = -.000771605 (-6) -4 =.000771605.08 -5 = 305,175.7812

29. Spring 2006Calculator Skills29 Method 1: To multiply a number in scientific notation use the ^ key, 5 th row, 1st column. Use calculator to evaluate: (6.3 x 10 8 )(4.2 x 10 9 ) is keyed in as 6.3, x,10,^,8, x, 4.2, x, 10 ^ 9, Enter. (6.3 x 10 8 )(4.2 x 10 9 ) 6.3*10^8*4.2*10^9 2.646 x10 18

30. Spring 2006Calculator Skills30 Method 1: To multiply a number in scientific notation use the ^ key, 5 th row, 1st column. Use calculator to evaluate: (6.3 x 10 8 )(4.2 x 10 9 ) is keyed in as 6.3, x,10,^,8, x, 4.2, x, 10 ^ 9, Enter. (6.3 x 10 8 )(4.2 x 10 9 ) The Calculator screen shows: 6.3 * 10^8 * 4.2 * 10^9 2.646 x 10 18 2.646 x 10 18 6.3*10^8*4.2*10^9 2.646 x10 18

31. Spring 2006Calculator Skills31 Method 2: To multiply a number in scientific notation use the EE key, 5 th row, 2 nd column. Use calculator to evaluate: (6.3 x 10 8 )(4.2 x 10 9 ) is keyed in as 6.3, EE, 8, x, 4.2, EE, 9, Enter. (6.3 x 10 8 )(4.2 x 10 9 ) 2 nd key 6.3 E 8*4.2 E 9 2.646 x10 18

32. Spring 2006Calculator Skills32 Method 2: To multiply a number in scientific notation use the EE key, 5 th row, 2 nd column. Use calculator to evaluate: (6.3 x 10 8 )(4.2 x 10 9 ) is keyed in as 6.3, EE, 8, x, 4.2, EE, 9, Enter. (6.3 x 10 8 )(4.2 x 10 9 ) 2 nd key The Calculator screen shows: 6.3 E 8 * 4.2 E 9 2.646 x 10 18 2.646 x 10 18 6.3 E 8*4.2 E 9 2.646 x10 18

33. Spring 2006Calculator Skills33 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 )

34. Spring 2006Calculator Skills34 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 ) Method 1: To multiply a number in scientific notation use the ^ key, 5 th row, 1st column. 8.6*10^15*3.4*10^11 2.924 x10 27

35. Spring 2006Calculator Skills35 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 ) Method 1: To multiply a number in scientific notation use the ^ key, 5 th row, 1st column. (8.6 x 10 15 )(3.4 x 10 11 ) is keyed in as 8.6, x,10,^,15, x, 3.4, x, 10 ^ 11, Enter. 8.6*10^15*3.4*10^11 2.924 x10 27

36. Spring 2006Calculator Skills36 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 ) Method 1: To multiply a number in scientific notation use the ^ key, 5 th row, 1st column. (8.6 x 10 15 )(3.4 x 10 11 ) 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 10 27 2.924 x 10 27 8.6*10^15*3.4*10^11 2.924 x10 27

37. Spring 2006Calculator Skills37 Method 2: To multiply a number in scientific notation use 2 nd key the EE key, 5 th row, 2 nd column. 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 ) is keyed in as 8.6, EE, 15, x, 3.4, EE, 11, Enter. (8.6 x 10 15 )(3.4 x 10 11 ) 8.6 E 15*3.4 E 11 2.924 x10 27

38. Spring 2006Calculator Skills38 Method 2: To multiply a number in scientific notation use 2 nd key the EE key, 5 th row, 2 nd column. 9. Use calculator to evaluate: (8.6 x 10 15 )(3.4 x 10 11 ) is keyed in as 8.6, EE, 15, x, 3.4, EE, 11, Enter. (8.6 x 10 15 )(3.4 x 10 11 ) The Calculator screen shows: 8.6 E 15 * 3.4 E 11 2.924 x 10 27 2.924 x 10 27 8.6 E 15*3.4 E 11 2.924 x10 27

39. Spring 2006Calculator Skills39 Use calculator to evaluate a square root.

40. Spring 2006Calculator Skills40 To find the square root of a number, use 2 nd 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 238. 238