Maths Flashcards
How do you calculate the perimeter of a shape
Measure/add up the around outside of shape
What is a prism?
A 3D shape that when sliced into equal lengths, each piece is the same shape and size
How many sides does a: Triangle Octagon Quadrilateral Pentagon Hexagon Decagon
3 8 4 5 6 10
What is a seven sided shape called?
Heptagon
What does BIDMAS or BODMAS stand for?
What do you use it for?
Brackets, Indices, Division, Multiplication, Addition, Subtraction
(Indices=Order)
Used to determine the order of calculations
How many months in a year?
12
Which months have 31 days?
January March May July August October December
Which months have 30 days?
April
June
September
November
How many days does February have?
28 days
29 in a leap year
What are the 4 suits of cards?
Spades
Diamonds
Clubs
Hearts
What is the probability of picking an ace from a pack of cards
4/52 = 1/13
What is the formula to calculate the area of a triangle
0.5 * length * height
What is the formula to calculate the area of a rectangle/square
Length*width
Name the 5 types of triangle
Equilateral - 3 equal sides and angles
Isosceles - 2 equal sides and equal angles opposite these sides
Right-angled - one angle of 90 degrees
Obtuse - one angle greater than 90 degrees
Scalene - 3 sides of different lengths and 3 different angled
What is a line of symmetry?
A line which splits a shape into halves that are reflections of each other
How many lines of symmetry do the following shapes have:
Isosceles triangle
Equilateral triangle
Circle
Isosceles=1
Equilateral = 3
Circle = unlimited
How many lines of symmetry do the following shapes have:
Square
Rectangle
Pentagon
Octagon
Square = 4 Rectangle = 2 Pentagon = 5 Octagon = 8
What is rotational symmetry?
If a shape is rotated about its central point and still fits its original outline.
What order of rotational symmetry do the following shapes have:
Equilateral triangle Square Rectangle Isosceles triangle Regular hexagon
Equilateral triangle = 3 Square = 4 Rectangle = 2 Isosceles triangle = 1 Regular hexagon = 6
What is the formula to calculate the volume of a cube?
Lengthwidthheight
What are the first 5 numbers in the sequence of cube numbers?
1,3,9,27,64,125
How often do leap years occur?
How do you work out which years are leap years?
Every 4 years
If the last 2 digits of the year are halved, and the answer is even, then the year is a multiple of 4 and therefore a leap year.
How many degrees do the angles of a triangle add up to?
180 degrees
What is the formula to calculate the volume of a cube?
Lengthwidthheight
What are the first 5 numbers in the sequence of cube numbers?
1,3,9,27,64,125
How often do leap years occur?
How do you work out which years are leap years?
Every 4 years
If the last 2 digits of the year are halved, and the answer is even, then the year is a multiple of 4 and therefore a leap year.
How many degrees do the angles of a triangle add up to?
180 degrees
How can you work out if a shape has been reflected in a diagonal line?
Check if it has been reflected in the vertical line and then rotated either 90 degrees clockwise or anticlockwise.
What are the first 5 numbers in the sequence of square numbers?
1,4,9,16,25
How do you divide two proper fractions?
E.g. 2/3 divided by 2/5.
Change the divide to multiply and turn the second fraction upside-down. Muliply numerators together and denominators together
How many pairs of perpendicular faces does a cube have?
12
What must you do to add or subtract fractions with different deniminators
Find the common denominator, then add/subtract the numerators
How many kg in a tonne?
1000 kg
