Factors

Question 1

What is a factor?

Answer 1

Numbers that multiply together to give a number

Question 2

What are the factors of 15?

Answer 2

1 , 15

3 , 5

Question 3

What are the factors of 24?

Answer 3

1 , 24
2 , 12
3 , 8
6 , 4

Question 4

What is the highest common factor of 10 and 15?

Answer 4

5

Question 5

What is the lowest common multiple of 5 and 3?

Answer 5

15

Question 6

What is a prime number?

Answer 6

A number with exactly two factors

Question 7

Is 1 a prime number? Why?

Answer 7

The number 1 is not a prime number because it only has one factor

Question 8

What are the prime numbers?

Answer 8

2 , 3 , 5 , 7 , 11 , 13 , 17 , 19 , 23 , 29 , 31 , 37 , 41 , 43 , 47 , 53 , 59 , 61 , 71 , 73 , 79 , 83 , 89 , 97

Question 9

What is 100 as a product of its prime factors?

Answer 9

100 = 2 x 2 x 5 x 5

Question 10

What is 120 as a product of its prime factors?

Answer 10

120 = 2 x 2 x 2 x 3 x 5

Question 11

How do you find the LCM in a Venn diagram?

Answer 11

Numbers in all the circle multiplied together

Question 12

How do you find the HCF in a Venn diagram?

Answer 12

Numbers in the intersection {bit in the middle} multiplied

Question 13

What is the LCM of 19?

Answer 13

19

Question 14

Put the factors of 6 and 15 in a Venn diagram

Work out the HCF and LCM

Answer 14

HCF = 3
LCM = 2 X 3 X 5 = 30

Factors { 2 , 3 , 5}

Question 15

What is 1 squared?

Answer 15

1 X 1 = 2

Question 16

What is 2 squared?

Answer 16

2 X 2 = 4

Question 17

What is 3 squared?

Answer 17

3 X 3 = 9

Question 18

What is 4 squared?

Answer 18

4 X 4 = 16

Question 19

What is 5 squared?

Answer 19

5 X 5 = 25

Question 20

What is 6 squared?

Answer 20

6 X 6 = 36

Question 21

What is 7 squared?

Answer 21

7 X 7 = 49

Question 22

What is 8 squared?

Answer 22

8 X 8 = 64

Question 23

What is 9 squared?

Answer 23

9 X 9 = 81

Question 24

What is 10 squared?

Answer 24

10 X 10 = 100

Question 25

What is 1 cubed?

Answer 25

1 X 1 X 1 = 1

Question 26

What is 2 cubed?

Answer 26

2 X 2 X 2 = 8

Question 27

What is 3 cubed?

Answer 27

3 X 3 X 3 = 27

Question 28

What is 4 cubed?

Answer 28

4 X 4 X 4 = 64

Question 29

What is 5 cubed?

Answer 29

5 X 5 X 5 = 125

Question 30

What is 10 cubed?

Answer 30

10 X 10 X 10 = 1000

Question 31

What is the square root of 100?

Answer 31

100 squared is 10

Question 32

What is the square root of 144?

Answer 32

144 squared is 12

Question 33

What is the square root of 25?

Answer 33

25 squared is 5

Question 34

What is the square root of 4?

Answer 34

The square root of 4 is 2

Question 35

What is the square root of 64?

Answer 35

64 squared is 8

Question 36

What is the square root of 225?

Answer 36

225 squared is 15

Question 37

What is 4 squared X 16 squared?

Answer 37

4 squared X 16 squared = 8

Question 38

What is another way of writing 5 X 5 X 5 X 5 X 5 X 5?

Answer 38

5 to the power of 6

Question 39

What is another way of writing 7 X 7 X 7?

Answer 39

7 cubed

Question 40

What is another way of writing 1/2 X 1/2 X 1/2 X 1/2 X 1/2?

Answer 40

(1/2) to the power of 5 Must have fractions in brackets

Question 41

What is 8 squared times 8 cubed?

Answer 41

8 to the power of 5 = 8 X 8 X 8 X 8 X 8

Question 42

What is 8 to the power of 5 divided by 8 to the power of 3?

Answer 42

8 to the power of 2 8 X 8 X 8 X 8 X 8 cross off three 8's up here to work it out ------------------ 8 X 8 X 8 cross of the three 8's

Question 43

Simplify 3 squared X 3 cubed

Answer 43

3 to the power of 5

Question 44

Simplify 4 squared X 4 to the power of 5

Answer 44

4 to the power of 7

Question 45

Simplify 10 to the power of 7 divided by 10 to the power of 5

Answer 45

10 squared

Question 46

Simplify (6 to the power of 9) squared

Answer 46

6 to the power of 18

Question 47

Simplify 8 to the power of 9 divided by 8 to the power of 5?

Answer 47

8 to the power of 4

Question 48

Simplify 12 to the power of 15 divided by 12 to the power of 12?

Answer 48

12 cubed

Question 49

Simplify (2 to the power of 5) squared - 1000

Answer 49

2 to the power of 10 - 1000

Question 50

What is 49 X 6?

Answer 50

294

Question 51

What is 831 X 16?

Answer 51

13,296

Question 52

How do you read napiers bones?

Answer 52

You read napiers bones left to right

Question 53

How do you write napiers bones?

Answer 53

Write napiers bones right to left

Question 54

What is 752 divided by 4?

Answer 54

188

Question 55

What is 924 divided by 18?

Answer 55

51.3 reccuring

Question 56

What is an integer?

Answer 56

An integer is a whole number

Question 57

45. 453 rounded to: a) The nearest 10 b) The nearest integer c) To 1 decimal place d) To 2 decimal places

Answer 57

a) 50 b) 45 c) 45.5 d) 45.45

Question 58

What is a significant figure?

Answer 58

It is the first non-zero digit of a number

Question 59

Round 346.9 to 2 significant figures

Answer 59

350 {keep the value at the original number, it stays at 100, so not 35

Question 60

What is a coprime?

Answer 60

Two numbers that only have 1 as their common factor Eg) 35 = 7 X 5 X 1

Question 61

Round 67.8 to one significant figure

Answer 61

70

Question 62

Round 39.9 to 2 significant figures

Answer 62

40

Question 63

How do you estimate using significant figures?

Answer 63

Round to 1 significant figure and if the calculation isn't easy round again

Question 64

+ 2 + + 5 = ?

Answer 64

7

Question 65

+ 2 + - 5 = ?

Answer 65

-3

Question 66

+ 2 - + 5 = ?

Answer 66

- 3

Question 67

+ 2 - - 5 = ?

Answer 67

7

Question 68

What does the

Answer 68

Smaller than

Question 69

What does the

Answer 69

Smaller than or equal to

Question 70

What does the > sign mean?

Answer 70

Greater than

Question 71

What does the > sign mean? | -

Answer 71

Greater than or equal to

Question 72

+ X + = ?

Answer 72

+

Question 73

+ X - = ?

Answer 73

-

Question 74

- X + = ?

Answer 74

-

Question 75

- X - = ?

Answer 75

+

Question 76

+ divided by + = ?

Answer 76

+

Question 77

+ divided by - = ?

Answer 77

-

Question 78

- divided by + = ?

Answer 78

-

Question 79

- divided by - = ?

Answer 79

+

Question 80

-5 X -7 = ?

Answer 80

35