Flashcards
maths flashcards_1
Flashcards do conjunto (108)
- 1roundingrounding
- 2round 5.043 to one decimal place5.0
- 3round 5849 to the nearest 10006000
- 4square, cubes and rootssquare, cubes and roots
- 5explain what a square number isits when a number is multiplied by itself the answer is a square number for example:
2x2=4
so 4 is a square number - 6explain a cube numberits a number multiplied then multiplied by itself again, the answer is a cube number:
2x2x2=8 - 7factors, multiples and primesfactors, multiples and primes
- 8explain what a factor is and give an examplethe factor of a number is where any whole number can divide into it
12: 1 ,2 ,3 ,4 ,6, 12 - 9using a factor tree work out the product of 903x2x3x5
- 10hcf and lcmhcf anf lcm
- 11what is the highest common factorthe highest common factor of two numbers is the highest number that is a factor of both numbers
- 12what is the lowest common multiplethe lowest common multiple of two numbers is the lowest number that is a multiple of both numbers
- 13fractionsfractions
- 14what fraction is equivalent to 2/33/4
- 15cancel the fraction 12/812/8 divide by 2 = 6/9 divided by three= 2/3
divide by top and bottom - 16work out 3/10 of 200kg200kg divided by 10= 20kg
20x3=60kg - 17simple fractionssimple fractions
- 18work out 1/5 + 3/102/10 + 3/10
=
5/10 - 19work out 8/9 - 1/616/18 - 3/18
=
13/18 - 20work out 2/3 x 7/102 x 7 = 14
3 x 10 = 30
=
14/30 - 21work out 2/5 divided by 3/42/5 x 4/3
=
8/15 - 22convert this mixed number into an improper fraction: 3 1/43 x 4+1= 13
the denominator stays the same so the answer would be 13/4 - 23convert this improper fraction into a mixed number: 23/523 divided by 5 = 4 3/5
- 24number and calculator skillsnumber and calculator skills
- 25what does bidmas stand forBrackets
IndIces
Division
Multiplication
Addition
Subtraction - 26work out (10 - 7) +4 x3 squared3+4x3 squared
3+4x9
3+36
=
39 - 27percentagespercentages
- 28if you have 100 blocks and 20 are shaded what's the equivalent in the form of a fraction20/100
or
1/5 - 29how do you find a percentage of an amountdivide the percentage by 100 then multiply by the amount
- 30in a year group of 96 students, 60 own a bicycle. express 60 as a percentage of 9660 divided by 96= 0.625
0.625 x 100 = 62.5
62.5% of the students own a bicycle - 31work out 25% of £28025/100 x £280 = £70
then subtract the decrease
£280 - £70 = £210 - 32a football club increases the prices of its season tickets by 4.8% each year. In 2010 a top-price season ticket cost £550 calculate the price of this season ticket in 20114.8/100 x 550 = 26.4
£550 + £26.40 = £576.40 - 33fractions , decimals and percentagesfractions, decimals and
percentages - 34convert this fraction into a decimal 2/52 divided by 5= 0.4
- 35write 60% as a fraction and simplify it as much as possible60/100
6/10
3/5 - 36ratioratio
- 37how do you write a ration in its simplest formfind an equivalent ratio with the smallest possible whole number values
- 38there are some oranges and apples in a box. the total number of oranges and apples is 54, the ratio of the number of oranges to the number is 1:5 work out the number of apples in the box1 + 5 = 6
54 divided by 6 = 9
5 x 9 = 45 apples - 39jimmy is preparing the ingredients for a pizza. he uses cheese, topping and dough in the ratio 2 : 3 : 5 he uses 70 grams of dough. how many grams of topping will jimmy use1 part: 70g divided by 5 = 14g
3 parts: 3 x 14g = 42g of topping - 40problem-solving practiseproblem-solving practise
- 41a bag contains green, red and blue counters. 40% of the counters are green. there are three times as many red counters as blue counters. there are 9 blue counters in the bag. how many counters are there in the bag in total100- 40 = 60 counters
- 42collecting like termscollecting like terms
- 43simplify h + h +h3h
- 44simplify 5x - 2x3x
- 45simplify 2p + 7p - p8p
- 46expanding bracketsexpanding brackets
- 47expand 5(2y-3)5(2y-3)= 10 -15
- 48factorisingfactorising
- 49factorise 3x +123x +12 =3(x+4)
- 50sequencessequences
- 51find the nth term in this sequence: 1,5,9,13,174n
- 52find the nth term in this sequence 4,710,134n-1
- 53equationsequations
- 54solve: 4y + 7 = 13(take away 7)
4y=6 ( divided by 4)
y=1.5 - 55solve : n - 9 = 14n - 9 = 14 (change to plus 9)
n=23 - 56inequalitiesinequalities
- 57what does this arrow mean: x > 2it means greater than
- 58what does this arrow mean: x < 1this means less than
- 59when solving an inequality what always stays the samethe way the arrow is facing
- 60solve this inequality: 10 -x < 2x + 110 < 3x +1
9 < 3x
3 < x - 61correlationscorrelations
- 62whats a positive correlationwhen a line of best fit is drawn its clear that the line starts at 0 and rises gradually higher
- 63whats a negative correlationwhen the correlation starts high and gradually gets slower
- 64whats a scattered correlationwhen the points are plotted and the results are scattered over the graph
- 65how do quadratic graphs workyou get given coordinates and you have to work out some of them out then plot the coordinates and draw a curve or line matching the coordinates up
- 66what are the main points you must always remember when drawing a quadratic graph1. use a sharp pencil
2. plot the points carefully
3. draw a smooth curve that passes through each point
4. label your graph - 67anglesangles
- 68whats the name of the angle that measures 90 degreesright angle
- 69what do all angles on a straight line add up to180 degrees
- 70angles between 90 and 180 degrees are calledobtuse angles
- 71what are reflex anglesangles measuring over 180 degrees
- 72what do angles in a triangle add up to180 degrees
- 73what do angles in a quadrilateral add up to360 degrees
- 74what is the exterior angle equal toits equal to the sum of the interior angles at the other two vertices
- 75what do opposite angles in a quadrilateral have the samethey are equal
- 76what is the same between corresponding and alternate anglesthey're both are equal
- 77what do allied angles add up to180 degrees
- 78how do you work out an angle in a polygonyou have to use the interior and exterior angles to work out the angle
- 79which way are bearings measured, clockwise or anticlockwise and from which directionclockwise and from north
- 80bearings are always how many numbers3
- 81when measuring bearings whats the first thing you always dodraw a arrow facing north
- 82whats the line called going through the middle of the circlediameter
- 83whats the radiusits half of the diameter so the line only goes half way across the circle
- 84the outside of a circle is called the?circumference
- 85whats the difference between congruent and not congruentcongruent means the shape is exactly the same shape and size whereas not congruent means the shape is different shape and size
- 86do the formula triangle for speedD
s x t - 87a plane travels at a constant speed of 600km/h for 45 minutes how far has it travelled45 divided by 60 =3/4
d=s x t
600 x 3/4 =600 x 3 divided by 4 = 1800/4=450
the plane travelled 450km - 88what is the perimeterits the distance around the outside of the shape
- 89whats the areathe area is the amount of "stuff" inside the shape
- 90how do you work out the perimeteradd up the length of each side of the shape
- 91how do you work out the areacount up the total of squares inside the shape
- 92how do you work out the area of a rectanglelength x width
- 93how do you work out the area of the parallelogrambase x vertical height
- 94how do you work out the area of a trianglebase x vertical height divided by 2
- 95how do you work out the area of a trapezium1/2 (top length + bottom length) x vertical height
- 96whats the formula to work out the circumference of a circlepi x diameter
- 97whats the formula to find the area of a circlepi x radius squared
- 98whats the formula to find the volume of a prismlength x width x height
- 99how do you find the volume of a prism with a constant cross sectionarea of cross section x length
- 100if you were told to translate a shape with coordinates 4 -3 what would you dopick a point on the shape and go 4 to the right three down
- 101describe reflectionthe shape is reflected almost like its being reflected in a mirror this is known as the mirror line
- 102what are the two formulas used in the Pythagoras theorema2 + b2 = c2
c2 - b2 = a2 - 103whats a line segmentits a section of a straight line between two points you can use Pythagoras to work out the length of a line segment
- 104whats the modeits the value that occurs most often
- 105whats the medianwhen put in order the median is the middle value
- 106whats the meanyou add all the numbers together and then divide it by how many there are
- 107whats the rangethe highest number take away the lowest
- 108endend
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- GCSE maths FlashCards sobre maths flashcards_1, criado por caitlinleigh1999 em 20-08-2015.
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- Criado por caitlinleigh1999 · 20 ago 2015
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