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Functional Maths Edexcel > Maths > Flashcards

Maths Flashcards

1
Q

Probability is

A

1 minus the probability the event will happen.

1 - 0.5 = 50% chance
1 - 0.25 = 25% chance
1 - 0.25 = 25% chance

Must all equal back on one

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2
Q

What must you not forget when doing long multiplication on double/treble digits.

A

Bring down your zeros!!!

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3
Q

How do you get the answer for long multiplication for double digit+ sums

A

Do each line
Bring down your zeros
Add each line together

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4
Q

What is the number your dividing called?

A

The dividend

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5
Q

What is the number you dividing BY called?

A

The divisor

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6
Q

What’s answer called in long division?

A

The quotient

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7
Q

What’s the name of the formula symbol for long division?

A

The bus shelter

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8
Q

How to you add decimals to long division sums?

A

Add zero’s
Bring them down

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9
Q

Dave (bottom left) =

A

Density

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10
Q

Maggie (On top) =

A

Mass

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11
Q

Victor (bottom right) =

A

Volume

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12
Q

How do you get Density?

A

Maggie lies on victor (Mass divided by Volume)

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13
Q

How to do you get volume?

A

Maggie lies on Dave (Mass divided by Density)

Maggies a dirty bitch!

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14
Q

How do you get Mass?

A

Dave screws (x) Victor

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15
Q

Scaife (Bottom right) =

A

Speed

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16
Q

Tristan (Bottom left) =

A

Time

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17
Q

David (Top) =

A

Distance

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18
Q

Degree’s of a Triangle

A

180c (Half a square)
3 x 60c in equal triangle

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19
Q

Degree’s of square

A

360c
4 x 90c

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20
Q

Degree’s of pentagon

A

540c
1 Square + 1 Triangle

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21
Q

Range

A

The DIFFERENCE between largest and smallest number

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22
Q

Mode

A

The number that appears the MOST

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23
Q

Mean

A

The total of numbers divided by how many there are

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24
Q

Median

A

The number that is in the middle, or is the middle value.

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25
Q

How do you convert hours to minutes

A

Divide number by 60

14mph x 25 minutes
25/60 = 41.66

41.66 x 14 = 5.83

Nasty cyclist quesiton

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26
Q

How do you get speed?

A

David over Tristan

27
Q

How do you get distance?

A

Scaife X Tristan

28
Q

How to you get time?

A

David over Scaife

29
Q

How to calculate surface area - 2 Dimensions

A

Length (Longest side) x width

30
Q

How to calculate surface area - 3 Dimensions

A

Length (Longest side) x
Width (Medium side) x
Height (Shortest side)

31
Q

How to calculate surface area - Box

A

Length x wide x depth

32
Q

How to find surface area of an equally sized cube

A

Calculate one side and times x 6

EG
4 cm L x 4cm = 16cm squared
x 6 = 96cm squared

33
Q

How to find surface area of triangle

A

Base x Height
Divide by 2

34
Q

PI up to 5 Decimals

A

3.14159

35
Q

How to find area of a circa

A

Radius (half the diameter)
Square the radius
Multiply by PI (3.14)
= Answer in CM squared

36
Q

What does ‘Estimate mean’

A

Use an approximate answer
Usually a round number

37
Q

How to do you check an answer

A

Reverse it
Divide for multiplication (Vice versa)
Add for subtract (Vice versa)

38
Q

What do you do when you see a number next to a letter - EG

2.67a

A

Multiply!

a = 8

2.67 x 8

39
Q

How do you get the most accurate miles/speed questions

A

Use all decimals

40
Q

How do you build up positive marks?

A

Show all your workings - Look out for large mark questions

41
Q

How to work frequency tables

A
  1. Find the mid-point (Total divided by 2)
  2. Times Frequency by mid-point

What happens next depends on the question

42
Q

How do you calculate original prices from percentage drops?

A

In the scenario the price has dropped 18% (82% of the original)

82 / The price
x 100 = Original price

82 / 22,000 = £268.29
x 100 = £26,829.37 (Original price)

Check by minus off the original parentage

43
Q

How do you convert a mixed number to a fraction

A

Multiply the whole number by the bottom of the fraction

Add the result to the top of the fraction.

This may then display as an improper fraction (where the top is bigger than the bottom)

44
Q

How to convert a fraction to a mixed number

A

Divide top number by bottom number (To get remainder)

The whole = Result of division
Remainder = Top of fraction
Bottom = stays the same

45
Q

BIDMAS?

A

The order that calculations should be done

46
Q

Order of BIDMAS?

A

Brackets
Indices (Little numbers after letters)
Division
Multiplication
Addition
Subtraction

47
Q

How to change decimal into fraction?

A

Multiply Decimal by 100
Write the result as the top number
The bottom number is 100
Use equivalent fractions

48
Q

How to change fractions into decimals - Simple

A

Divide top by the bottom

49
Q

How to change fractions into decimals - Harder fractions

A

Multiply top number by 10
Divide by the bottom number
Divide result by 10

50
Q

What does ‘Of’ mean?

A

Multiply

51
Q

How to add and subtract decimal numbers

A

Line the numbers up over one another
Ensure whole numbers and decimal numbers line up
Add zero’s for any gaps

Use normal manual adding and subtracting methods

52
Q

How to multiply decimals

A

Ignore the decimal points 12.2 x 12.2
Multiply the two numbers as wholes 122 x 122
Add up the decimal points 1 + 1 = 2
Adjust answer by number of decimals

148.84

53
Q

How to divide a decimal by a whole number

A

Set up the division sum as you would normally
Write a decimal point on the top line in the same place
Work left to right as normal

54
Q

Dividing decimals (you will need fractions)

A

4.18 / 0.03

Write the division as a fraction (45.18 over 0.03)

Multiply the both 100 (4518 over 3)

Complete the whole number division

Thats it.

55
Q

How to calculate percentage change

A

Divide new value by original
Convert to percentage 0.25 x 100
Subtract 100% to find the change

56
Q

How to find out parameter?

A

Add up all sides

57
Q

How to find circumference of circle

A

Diameter x PI

Make sure you have diameter and not radius (half diameter)

58
Q

How to you convert metres squared to metres cubed

A

Divide by 10

59
Q

How to find the surface area of 3d objects

A

Multiply height by length of each face
Add them all together

60
Q

How to you find the volume of something

A

Multiply everything

61
Q

Circles x PI
Area
Circumference

A

Radius squared
Diameter

62
Q

How to calculate volume of a prism

A

Area of base: multiply and divide by 2

Multiply by length

63
Q

How to work out ratio’s

A

Add the ratio up (1:5) = 6
Divide the ratio by total = 72/6 = 12

Functional Maths Edexcel (1 decks)

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