Prime Factors Worksheet - Ti-15 Explorer, W2 (Page 4 of 5) in pdf

Prime Factors Worksheet - Ti-15 Explorer, W2 Page 4

Student Worksheet 2

TI-15 Explorer

: Prime Factors

™

Enter the fraction 2 4

1. Press

2. P ress . The fraction is displayed and at the top of the screen is

→

d D

is visible.

This means that the fraction can be simplified further.

3. P ress and a 2 is shown, meaning that the fraction has been simplified by dividing

numerator and denominator by 2.

4. This is the first prime factor of 24. Press and the fraction reappears.

5. P ress . The fraction is displayed and at the top of the screen is

→

d D

is still visible.

Press and a 2 is again shown. This means we have another factor of 2.

Record the factors as you find them.

6. R epeat these steps until appears and the symbols at the top are now which

indicates that no further simplification is possible.

7. Now we have the prime factors of 24 as 2 x 2 x 2 x 3 = 2

x 3

4. Use this method to check the prime factors of 72 found above in Q 4.

5. Try these:

a) 30

b) 48

c) 67

E ach time you think you have the factors of the given number check using the calculator to

multiply the factors together.

Prime Factors Worksheet - Ti-15 Explorer, W2 Page 4