All flashcards for Year 6 Maths Knowledge
As a decimal, how can you represent 1 kilometre in terms of miles (to three decimal places)
0.625
As a fraction, how can you represent 1 kilometre in terms of miles
5/8
Complete the blank in the following sentence: To find the [BLANK], add up all the numbers and divide by how many there are.
mean
Complete the blanks in the following sentence: The mean is a type of average. To find the mean, [BLANK - two words] all the numbers and [BLANK - one word] by [BLANK - four words].
mean
Fill in the blank in this sentence: [BLANK] is the amount of space inside a 2D shape, usually measured in cm2 or m2
Area
Fill in the blank in this sentence: [BLANK] is the amount of space a 3D shape takes up, usually measured in cm3 or m3
Volume
Fill in the two blanks in this sentence: Area is the amount of space inside a 2D shape, usually measured in [BLANK] or [BLANK]
cm2 or m2
Fill in the two blanks in this sentence: Volume is the amount of space a 3D shape takes up, usually measured in [BLANK] or [BLANK]
cm3 or m3
Give an example of a composite number?
12
How many centimetres are there in a metre?
100
How many days are there in a leap year?
366
How many days are there in a year (if it isn’t a leap year)?
365
How many days are there in April?
30
How many days are there in August?
31
How many days are there in December?
31
How many days are there in February (except in a leap year)?
28
How many days are there in February in a leap year?
29
How many days are there in January?
31
How many days are there in July?
31
How many days are there in June?
30
How many days are there in March?
31
How many days are there in May?
31
How many days are there in November?
30
How many days are there in October?
31
How many days are there in September?
30
How many degrees are there in a full turn?
360°
How many degrees are there in a half turn
180°
How many degrees are there in a right angle
90°
How many edges does a square-based pyramid have?
8
How many edges does a triangular prism have?
6
How many edges does a triangular-based pyramid have?
9
How many faces does a square-based pyramid have?
5
How many faces does a triangular prism have?
4
How many faces does a triangular-based pyramid have?
5
How many grams are there in a kilogram?
1,000
How many kilometres are there in a mile (to one decimal place)?
1.6
How many metres are there in a kilometre?
1,000
How many millilitres are there in a litre?
1,000
How many millimetres are there in a centimetre?
10
How many sides does a decagon have?
10
How many sides does a heptagon have?
7
How many sides does a hexagon have?
6
How many sides does a nonagon have?
9
How many sides does a octagon have?
8
How many sides does a pentagon have?
5
How many sides does a quadrilateral have?
4
How many vertices does a square-based pyramid have?
5
How many vertices does a triangular prism have?
4
How many vertices does a triangular-based pyramid have?
6
How many weeks are there in a year?
52 [plus 1 day in a normal day or plus 2 days in a leap year]
In 3D shapes, what name is given to the flat sides?
faces
In 3D shapes, what name is given to the points where “the lines which surround the flat sides” meet?
vertices
In 3D shapes, what name is given to what might be called “the lines which surround the flat sides”?
edges
In which direction does a horizontal line go?
Sideways
In which direction does a vertical line go?
Up and down
Name three types of quadrilateral apart from a square and a rectangle?
parallelogram, trapezium, rhombus
On a graph which uses co-ordinates to indicate points, is the x-axis horizontal or vertical?
Horizontal
On a graph which uses co-ordinates to indicate points, is the y-axis horizontal or vertical?
Vertical
The diameter of a circle is how many times bigger than the radius of a circle?
Twice as big
What adjective is applied to a line which goes sideways?
Horizontal
What adjective is applied to a line which goes up and down?
Vertical
What adjective is used to describe a polygon in which all the sides (and therefore all the angles) are equal?
regular
What adjective is used to describe a polygon in which not all the sides (and therefore not all the angles) are equal?
irregular
What are 1, 2, 3, 4 and 5 cubed, respectively?
1, 8, 27, 64, 125
What are 1, 2, 3, 4 and 5 squared, respectively?
1, 4, 9, 16 and 25
What are all the factors of the number 12?
1, 2, 3, 4, 6, 12
What are the first eight prime numbers?
2, 3, 5, 7, 11, 13, 17, 19
What distinguishes 2 and 3 from 1, 4, 6 and 12 as factors of 12?
2 and 3 are the only prime factors of 12 [i.e. factors which happen to be prime numbers]
What does it mean to say that a polygon is irregular?
Not all its sides (and therefore not all its angles) are equal
What does it mean to say that a polygon is regular?
All its sides (and therefore all its angles) are equal
What does it tell you about the number of degrees in an angle if you know that it’s an acute angle?
It is less than 90°
What does it tell you about the number of degrees in an angle if you know that it’s an obtuse angle
It has more than 90° and less than 180°
What does it tell you about the number of degrees in an angle if you know that it’s a reflex angle
It has more than 180°
What is a circumference?
The distance you get when you measure round a circle
What is a perimeter?
The distance you get when you measure round any 2D shape apart from a circle
What is the decimal equivalent of 1%?
0.01
What is the decimal equivalent of 1/100?
0.01
What is the decimal equivalent of 1/10?
0.1
What is the decimal equivalent of 1/20?
0.05
What is the decimal equivalent of 1/2?
0.5
What is the decimal equivalent of 1/4?
0.25
What is the decimal equivalent of 1/5?
0.2
What is the decimal equivalent of 10%?
0.1
What is the decimal equivalent of 20%?
0.2
What is the decimal equivalent of 25%?
0.25
What is the decimal equivalent of 3/4?
0.75
What is the decimal equivalent of 5%?
0.05
What is the decimal equivalent of 50%?
0.5
What is the decimal equivalent of 75%?
0.75
What is the definition of a composite number?
A number which has more than two factors
What is the definition of a cube number?
The result when a number has been multiplied by itself three times, if by this we mean [number] x [number] x [number]? (A pedant would say that the number has been multiplied by itself and then by multiplied by itself again, and that we should therefore say that it has been multiplied by itself twice.)
What is the definition of a factor?
a number that divides exactly into another number
What is the definition of a prime number?
A number which has only two factors: 1 and itself?
What is the definition of a scalene triangle?
A triangle all of whose sides have different lengths
What is the definition of a square number?
The result when a number has been multiplied by itself
What is the definition of an equilateral triangle
A triangle all of whose sides have the same length
What is the definition of an isosceles triangle?
A triangle which has two sides of the same length
What is the definition of parallel lines?
Lines which, however far they are extended, will not meet
What is the definition of perpendicular lines?
Lines which are at right angles
What is the definition of the diameter of a circle?
The distance from one side of a circle, through the centre, and straight on to the other side
What is the definition of the radius of a circle?
The distance from the centre of a circle to the circumference
What is the formula for the area of a parallelogram?
base x height
What is the formula for the area of a triangle?
(base x height) ÷ 2
What is the formula for the volume of a cuboid?
length x width x height
What is the fraction equivalent of 0.01?
1/100
What is the fraction equivalent of 0.05?
1/20
What is the fraction equivalent of 0.1?
1/10
What is the fraction equivalent of 0.25?
1/4
What is the fraction equivalent of 0.2?
1/5
What is the fraction equivalent of 0.5?
1/2
What is the fraction equivalent of 0.75?
3/4
What is the fraction equivalent of 1%?
1/100
What is the fraction equivalent of 10%?
1/10
What is the fraction equivalent of 20%?
1/5
What is the fraction equivalent of 25%?
1/4
What is the fraction equivalent of 5%?
1/20
What is the fraction equivalent of 50%?
1/2
What is the fraction equivalent of 75%?
3/4
What is the percentage equivalent of 0.01?
1%
What is the percentage equivalent of 0.05?
5%
What is the percentage equivalent of 0.1?
10%
What is the percentage equivalent of 0.25?
25%
What is the percentage equivalent of 0.2?
20%
What is the percentage equivalent of 0.5?
50%
What is the percentage equivalent of 0.75?
75%
What is the percentage equivalent of 1/100?
1%
What is the percentage equivalent of 1/10?
10%
What is the percentage equivalent of 1/20?
5%
What is the percentage equivalent of 1/2?
50%
What is the percentage equivalent of 1/4?
25%
What is the percentage equivalent of 1/5?
20%
What is the percentage equivalent of 3/4?
75%
What is this shape?
A square-based pyramid
What is this shape?
A triangular-based pyramid
What is this shape?
A triangular prism
What kind of triangle is shown here?
Scalene
What kind of triangle is shown here?
Isosceles
What kind of triangle is shown here?
Equilateral
What name is given to a number that divides exactly into another number?
A factor
What name is given to a number which appears in another number’s times table e.g. 9, 18, 27, 36 and so on in the 9 Times Table?
Multiples
What name is given to a number which has more than two factors?
Composite
What name is given to a number which has only two factors: 1 and itself?
Prime
What name is given to a shape with 10 straight sides?
decagon
What name is given to a shape with 4 straight sides?
quadrilateral
What name is given to a shape with 5 straight sides?
pentagon
What name is given to a shape with 6 straight sides?
hexagon
What name is given to a shape with 7 straight sides?
heptagon
What name is given to a shape with 8 straight sides?
octagon
What name is given to a shape with 9 straight sides?
nonagon
What name is given to a shape with a number of straight sides?
polygon
What name is given to a triangle all of whose sides have different lengths?
Scalene
What name is given to a triangle all of whose sides have the same length?
Equilateral
What name is given to a triangle which has two sides of the same length?
Isosceles
What name is given to factors which occur when two numbers have factors that are the same e.g. when 1, 2 and 4 are factors of 8 and also factors of 12?
common factors
What name is given to lines which are at right angles?
Perpendicular
What name is given to lines which, however far they are extended, will not meet?
Parallel
What name is given to numbers which appear in more than one other number’s times table, for example 12 and 24 as they appear in both the 4 Times Table and the 6 Times Table
common multiples (of 4 and 6 in this case)
What name is given to the distance from one side of a circle, through the centre, and straight on to the other side?
Diameter
What name is given to the distance from the centre of a circle to the circumference?
Radius
What name is given to the distance you get when you measure round a circle?
Circumference
What name is given to the distance you get when you measure round any 2D shape apart from a circle?
Perimeter
What name is given to the result when a number has been multiplied by itself
A square number
What name is given to the result when a number has been multiplied by itself three times, if by this we mean [number] x [number] x [number]?
A cube number
What number of degrees must the angles inside a quadrilateral add up to?
360°
What number of degrees must the angles inside a triangle add up to?
180°
What number of degrees must the angles on a straight line add up to?
180°
When points on a co-ordinate graph are represented in the form ([number1], [number2]), which number represents the x-axis?
number1 represents the x-axis
When points on a co-ordinate graph are represented in the form ([number1], [number2]), which number represents the y-axis?
number2 represents the y-axis
When points on a co-ordinate graph are represented in the form ([number1], [number2]), which number represents the horizontal axis?
number1 represents the horizontal axis
When points on a co-ordinate graph are represented in the form ([number1], [number2]), which number represents the vertical axis?
number2 represents the vertical axis
Which months have exactly 30 days?
April, June, September, November [i.e. the 4th and 6th months in the year and the 9th and 11th months in the year]
Which months have exactly 31 days?
January, March, May, July, August, October, December [i.e. the 1st, 3rd, 5th and 7th months in the year, and the 8th, 10th and 12th months in the year]
Which parts of 3D shapes are called ‘edges’?
The lines which surround the flat sides
Which parts of 3D shapes are called ‘faces’?
The flat sides
Which parts of 3D shapes are called ‘vertices’?
The points where “the lines which surround the flat sides” meet
Which type of quadrilateral is shown here?
Parallelogram
Which type of quadrilateral is shown here?
Trapezium
Which type of quadrilateral is shown here?
Rhombus
[BONUS QUESTION] A triangular prism is very similar to the shape of which item of chocolate confectionery?
Toblerone
[BONUS QUESTION] Of which word is ‘vertices’ the plural form?
Vertex
[BONUS QUESTION] Which 3D shape is very similar to the shape of a Toblerone?
Triangular prism
