Factors

Q. Select the composite number between 15 and 25.

1. 19
2. 23
3. 17
4. 21

Q.

18 as a product of its prime factors is ___

1. $1\times 2\times 3$

2. $2\times 2\times 3$

3. $2\times 2\times 2\times 2$

4. $2\times 3\times 3$

Q. Select the composite number between 10 and 20.

1. 11
2. 13
3. 17
4. 18

Q. Which one of the following number has only one factor?

1. 2
2. 3
3. 4
4. 1

Q. Which of the following represents the prime factorisation of 405?

1. $3\times 3\times 3\times 3\times 5$
2. $2\times 3\times 3\times 3\times 5$
3. $2\times 3\times 3\times 5\times 5$
4. $3\times 3\times 3\times 5\times 5$

Q. The factor of a number is always more than or equal to the number itself.

1. True
2. False

Q. What are the first three multiples of 8?

1. 8, 12 and 16
2. 8, 16 and 32
3. 8, 16 and 24
4. 8, 24 and 32

Q. How many 2's are there in the prime factorization of 100?

1. 5
2. 4
3. 2
4. 1

Q. Divide 11009 by 101 using the long division method to find the quotient.

1. 19
2. 0
3. 109
4. 118

Q.

When we divide a number by its factor, we get ___ as the remainder.

1. 1

2. 10

3. 0

4. 2

Q. Find all the odd factors of 20.

1. 1, 5
2. 5
3. 1, 20
4. 4

Q. There are 8 packets of rakhis with each packet having 6 rakhis in it. How many rakhis are there in total?

1. 50
2. 48
3. 45
4. 56

Q. Which of the following is the possible remainder when a number is divided by 2?

1. 3
2. 2
3. 1
4. 4

Q. Which of the following numbers is a factor of 100?

1. 6
2. 30
3. 10
4. 15

Q.

Question 4

Find all the multiples of 9 up to 100.

Q.

Lee bought these three books in the sale for £ 14.50. How much money did he save altogether compared to the full price of the books?

1. £ 2.47

2. £ 2.80

3. £ 2.88

4. £ 3.89

Q.

Without actual division, show that $19$ is a factor of $19038$.

Q. What are all the possible factor pairs of 36?

[2 marks]

Q. How many multiples a number can have?

1. 10
2. Infinite
3. Finite
4. 100

Q. Out of 12 balls, quarter of them are blue in colour. How many balls are not blue in colour?

1. 3
2. 6
3. 9
4. 12

Q. Which of the following shows the possible remainders when a number is divided by 6?

1. 0, 1 , 6
2. 2, 4
3. 0, 1, 2, 3, 4, 5
4. 0

Q. Tap on the composite number that comes just before 30.

1. 25
2. 28
3. 27
4. 29

Q.

How much does it cost to hire a rowing boat for three hours?

1. £7.50

2. £6.50

3. £7.85

4. £7.40

Q. What is the sum of the first three multiples of 7?

1. 44
2. 42
3. 38
4. 40

Q.

find the smallest number which when divided by 25, 40 , 60 leaves remainder 7 in each case .

Q.

I am getting the difficulty in finding the factors and muktiples.

Q. The weight of 1 box is 4 kg. What is the weight of 72 boxes?

1. 288 kg
2. 285 kg
3. 290 kg
4. 280 kg

Q. 7 times 6

1. 36
2. 52
3. 48
4. 42

Q. 3 metres 20 cm = ______ mm.

1. 3200
2. 2800
3. 3000
4. 3500

Q. What is the prime factorisation of 272 ?

1. $2\times 2\times 2\times 2\times 7$
2. $2\times 2\times 3\times 3\times 17$
3. $2\times 2\times 2\times 2\times 17$
4. $2\times 2\times 3\times 2\times 17$