Calculator Activity #1
Introduction to the TI-81 or TI-82

I. Use your calculator to evaluate the following expressions.

1. (5 + 7 ) *8 _____ 9. 100 / [( 20 / 5 ) - 3] _____

2. 5 + (7 * 8 ) _____ 10. 100 / [20 / (5 - 3)] _____

3. (36 / 2) * 6 _____ 11. [800 / (50 / 2)] - 7 _____

4. 36 / (2 * 6) _____ 12. [(800 / 50 )/ 2] - 7 _____

5. [16 - (3 * 2)] - 4 _____ 13. (63-8) / (3+8) - 2 _____

6. 16 - [(3 * 2) - 4] _____ 14. 19 - (25 - 7)/(5 + 4) _____

7. (10 + 6) * (11 - 3) _____ 15. 5 * (19 - 7) / (5 + 7) _____

8. 10 + [6 * (11 - 3)] _____ 16. 28 / (8 * 6) / ( 5 + 7) _____

II. Evaluate the following expressions by substituting the given values of the
variable.

1. (z - 19) * 5, if :

a. z is 100________

b. z is 37_________

c. z is 78_________

2. (p + 7 ) / 9, if :

a. p is 108 ________

b. p is 72__________

c. p is 243_________

3. 4 (30 - x)/ (x + 2), if :

a. x ix 2__________

b. x is 6__________

c. x is 10_________

4. n(40 - n) + 34, if :

a. n is 6__________

b. n is 17_________

c. n is 40_________

5. (35 + y) / (y - 17), if:

a. y is 19_________

b. y is 2 5________

c. y is 17_________

6. (26 + 3 t ) / (2 t ), if:

a. t is 6__________

b. t is 10_________

c. t is 100________