Factorials Worksheet

                    Lesson 1

Problem:  10! - 9!

Solution 10! = 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3×2×1 = 3628800

                                          Step 1:                         

Solution   9! = 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2×1 = 362880

Step 2:                         

Solution   10! - 9! = 3628800 - 362880 = 3265920.0

Step 3:

Solution Answer: 3265920.0

Step 4:

Complete      

                                          Try two practice problems:  

A. (9 – 3)!

B. 10! ÷ 10!

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