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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
How do you convert hours to minutes
Divide number by 60 14mph x 25 minutes 25/60 = 41.66 41.66 x 14 = 5.83 Nasty cyclist quesiton
26
How do you get speed?
David over Tristan
27
How do you get distance?
Scaife X Tristan
28
How to you get time?
David over Scaife
29
How to calculate surface area - 2 Dimensions
Length (Longest side) x width
30
How to calculate surface area - 3 Dimensions
Length (Longest side) x Width (Medium side) x Height (Shortest side)
31
How to calculate surface area - Box
Length x wide x depth
32
How to find surface area of an equally sized cube
Calculate one side and times x 6 EG 4 cm L x 4cm = 16cm squared x 6 = 96cm squared
33
How to find surface area of triangle
Base x Height Divide by 2
34
PI up to 5 Decimals
3.14159
35
How to find area of a circa
Radius (half the diameter) Square the radius Multiply by PI (3.14) = Answer in CM squared
36
What does 'Estimate mean'
Use an approximate answer Usually a round number
37
How to do you check an answer
Reverse it Divide for multiplication (Vice versa) Add for subtract (Vice versa)
38
What do you do when you see a number next to a letter - EG 2.67a
Multiply! a = 8 2.67 x 8
39
How do you get the most accurate miles/speed questions
Use all decimals
40
How do you build up positive marks?
Show all your workings - Look out for large mark questions
41
How to work frequency tables
1. Find the mid-point (Total divided by 2) 2. Times Frequency by mid-point What happens next depends on the question
42
How do you calculate original prices from percentage drops?
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
How do you convert a mixed number to a fraction
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
How to convert a fraction to a mixed number
Divide top number by bottom number (To get remainder) The whole = Result of division Remainder = Top of fraction Bottom = stays the same
45
BIDMAS?
The order that calculations should be done
46
Order of BIDMAS?
Brackets Indices (Little numbers after letters) Division Multiplication Addition Subtraction
47
How to change decimal into fraction?
Multiply Decimal by 100 Write the result as the top number The bottom number is 100 Use equivalent fractions
48
How to change fractions into decimals - Simple
Divide top by the bottom
49
How to change fractions into decimals - Harder fractions
Multiply top number by 10 Divide by the bottom number Divide result by 10
50
What does 'Of' mean?
Multiply
51
How to add and subtract decimal numbers
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
How to multiply decimals
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
How to divide a decimal by a whole number
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
Dividing decimals (you will need fractions)
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
How to calculate percentage change
Divide new value by original Convert to percentage 0.25 x 100 Subtract 100% to find the change
56
How to find out parameter?
Add up all sides
57
How to find circumference of circle
Diameter x PI Make sure you have diameter and not radius (half diameter)
58
How to you convert metres squared to metres cubed
Divide by 10
59
How to find the surface area of 3d objects
Multiply height by length of each face Add them all together
60
How to you find the volume of something
Multiply everything
61
Circles x PI Area Circumference
Radius squared Diameter
62
How to calculate volume of a prism
Area of base: multiply and divide by 2 Multiply by length
63
How to work out ratio's
Add the ratio up (1:5) = 6 Divide the ratio by total = 72/6 = 12

Functional Maths Edexcel (1 decks)

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