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Maths - Year Nine > Factors > Flashcards

Factors Flashcards

1
Q

What is a factor?

A

Numbers that multiply together to give a number

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2
Q

What are the factors of 15?

A

1 , 15

3 , 5

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3
Q

What are the factors of 24?

A

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

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4
Q

What is the highest common factor of 10 and 15?

A

5

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5
Q

What is the lowest common multiple of 5 and 3?

A

15

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6
Q

What is a prime number?

A

A number with exactly two factors

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7
Q

Is 1 a prime number? Why?

A

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

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8
Q

What are the prime numbers?

A

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

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9
Q

What is 100 as a product of its prime factors?

A

100 = 2 x 2 x 5 x 5

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10
Q

What is 120 as a product of its prime factors?

A

120 = 2 x 2 x 2 x 3 x 5

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11
Q

How do you find the LCM in a Venn diagram?

A

Numbers in all the circle multiplied together

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12
Q

How do you find the HCF in a Venn diagram?

A

Numbers in the intersection {bit in the middle} multiplied

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13
Q

What is the LCM of 19?

A

19

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14
Q

Put the factors of 6 and 15 in a Venn diagram

Work out the HCF and LCM

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

Factors { 2 , 3 , 5}

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15
Q

What is 1 squared?

A

1 X 1 = 2

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16
Q

What is 2 squared?

A

2 X 2 = 4

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17
Q

What is 3 squared?

A

3 X 3 = 9

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18
Q

What is 4 squared?

A

4 X 4 = 16

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19
Q

What is 5 squared?

A

5 X 5 = 25

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20
Q

What is 6 squared?

A

6 X 6 = 36

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21
Q

What is 7 squared?

A

7 X 7 = 49

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22
Q

What is 8 squared?

A

8 X 8 = 64

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23
Q

What is 9 squared?

A

9 X 9 = 81

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24
Q

What is 10 squared?

A

10 X 10 = 100

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25
Q

What is 1 cubed?

A

1 X 1 X 1 = 1

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26
Q

What is 2 cubed?

A

2 X 2 X 2 = 8

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27
Q

What is 3 cubed?

A

3 X 3 X 3 = 27

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28
Q

What is 4 cubed?

A

4 X 4 X 4 = 64

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29
Q

What is 5 cubed?

A

5 X 5 X 5 = 125

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30
Q

What is 10 cubed?

A

10 X 10 X 10 = 1000

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31
Q

What is the square root of 100?

A

100 squared is 10

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32
Q

What is the square root of 144?

A

144 squared is 12

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33
Q

What is the square root of 25?

A

25 squared is 5

34
Q

What is the square root of 4?

A

The square root of 4 is 2

35
Q

What is the square root of 64?

A

64 squared is 8

36
Q

What is the square root of 225?

A

225 squared is 15

37
Q

What is 4 squared X 16 squared?

A

4 squared X 16 squared = 8

38
Q

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

A

5 to the power of 6

39
Q

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

A

7 cubed

40
Q

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

A

(1/2) to the power of 5

Must have fractions in brackets

41
Q

What is 8 squared times 8 cubed?

A

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

42
Q

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

A

8 to the power of 2

8 X 8 X 8 cross of the three 8’s

43
Q

Simplify 3 squared X 3 cubed

A

3 to the power of 5

44
Q

Simplify 4 squared X 4 to the power of 5

A

4 to the power of 7

45
Q

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

A

10 squared

46
Q

Simplify (6 to the power of 9) squared

A

6 to the power of 18

47
Q

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

A

8 to the power of 4

48
Q

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

A

12 cubed

49
Q

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

A

2 to the power of 10 - 1000

50
Q

What is 49 X 6?

A

294

51
Q

What is 831 X 16?

A

13,296

52
Q

How do you read napiers bones?

A

You read napiers bones left to right

53
Q

How do you write napiers bones?

A

Write napiers bones right to left

54
Q

What is 752 divided by 4?

A

188

55
Q

What is 924 divided by 18?

A

51.3 reccuring

56
Q

What is an integer?

A

An integer is a whole number

57
Q
  1. 453 rounded to:
    a) The nearest 10
    b) The nearest integer
    c) To 1 decimal place
    d) To 2 decimal places
A

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

58
Q

What is a significant figure?

A

It is the first non-zero digit of a number

59
Q

Round 346.9 to 2 significant figures

A

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

60
Q

What is a coprime?

A

Two numbers that only have 1 as their common factor

Eg) 35 = 7 X 5 X 1

61
Q

Round 67.8 to one significant figure

A

70

62
Q

Round 39.9 to 2 significant figures

A

40

63
Q

How do you estimate using significant figures?

A

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

64
Q

+ 2 + + 5 = ?

A

7

65
Q

+ 2 + - 5 = ?

A

-3

66
Q

+ 2 - + 5 = ?

A
  • 3
67
Q

+ 2 - - 5 = ?

A

7

68
Q

What does the

A

Smaller than

69
Q

What does the

A

Smaller than or equal to

70
Q

What does the > sign mean?

A

Greater than

71
Q

What does the > sign mean?

-

A

Greater than or equal to

72
Q

+ X + = ?

A

+

73
Q

+ X - = ?

A

-

74
Q
  • X + = ?
A

-

75
Q
  • X - = ?
A

+

76
Q

+ divided by + = ?

A

+

77
Q

+ divided by - = ?

A

-

78
Q
  • divided by + = ?
A

-

79
Q
  • divided by - = ?
A

+

80
Q

-5 X -7 = ?

A

35

Maths - Year Nine (8 decks)

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