BalbhartiMaharashtra Board Class 5 Maths SolutionsChapter 8 Multiples and Factors Problem Set 33 Textbook Exercise Important Questions and Answers.
Maharashtra State Board Class 5 Maths Solutions Chapter 8 Multiples and Factors Problem Set 33
(2) Write five three-digit numbers that are multiples of 5.
Answer:
100, 105, 110, 115, 120.
(3) Write five three-digit numbers that are multiples of 10.
Answer:
100, 110, 120, 130, 140.
Prime and composite numbers
Some numbers are given in the tables below. Write all of their factors.
Dada : What do you notice on studying the table?
Ajay : The number 1 is a factor of every number. Some numbers have only 1 and the number itself as factors. For example, the only factors of 3 are 1 and 3. Similarly, the factors of 2 are only 1 and 2 and the factors of 19 are only 1 and 19. Some numbers have more than two factors.
Dada : Numbers like 2, 3, 19 which have only two factors are called prime numbers.
A number which has only two factors, 1 and the number itself, is called a prime number.
Ajay : What do we call numbers like 4, 6 and 16 which have more than two factors?
Dada : Numbers like 4, 6 and 16 are called composite numbers.
A number which has more than two factors is called a composite number.
Dada : Think carefully and tell me whether 1 is a prime or composite number.
Ajay : The number 1 has only one factor, 1 itself, so I can’t answer your question.
Dada : You’re right. 1 is considered neither a prime number nor a composite number.
1 is a number which is neither prime nor composite.
Multiples and Factors Problem Set 33 Additional Important Questions and Answers
