 Date: May 14, 2023   # Multiplying with Prime and Composite Numbers Worksheet

Instructions: Solve the following problems.

1. Multiply 2 and 3.
2. Multiply 5 and 7.
3. Multiply 11 and 13.
4. Multiply 17 and 19.
5. Multiply 23 and 29.
6. Multiply 31 and 37.
7. Multiply 41 and 43.
8. Multiply 47 and 53.
9. Multiply 59 and 61.
10. Multiply 67 and 71.

## Prime and Composite Numbers

Instructions: Classify the given numbers as prime or composite.

Number Prime or Composite?
19
37
57
73
91
101
121
151
169
197

## Multiplying with Prime and Composite Numbers

Instructions: Solve the following problems.

Multiplication Solution
2 x 11
3 x 23
5 x 19
7 x 31
11 x 13
17 x 29
19 x 41
23 x 47
37 x 41
53 x 59

## Prime Factorization

Instructions: Find the prime factorization of the given numbers.

Number Prime Factorization
24
36
48
60
72
84
96
108
120
144

## Multiplying with Prime Factorization

Instructions: Solve the following problems using prime factorization.

Multiplication Prime Factorization Solution
18 x 30
28 x 42
56 x 72
63 x 90
75 x 99
88 x 100
108 x 132
120 x 140
132 x 156
144 x 168

## Word Problems

Instructions: Solve the following word problems.

1. A farmer has 5 fields with 7 cows in each field. How many cows does he have in total?
2. A baker has 6 trays of bread, with 4 loaves of bread on each tray. How many loaves of bread does he have in total?
3. A company has 10 employees, and each employee has 8 hours of work per day. How many hours of work are done in total?
4. An office has 12 printers, and each printer can print 20 pages per minute. How many pages can all the printers print in 1 hour?
5. A class has 15 students, and each student has 5 pencils. How many pencils are there in total?

## Challenge Problems

Instructions: Solve the following challenge problems.

1. What is the product of the first 20 prime numbers?
2. What is the product of all the prime numbers between 30 and 40?
3. What is the product of all the odd composite numbers between 50 and 60?
4. What is the product of all the even composite numbers between 70 and 80?
5. What is the product of all the prime factors of 120?