Lily's Formula's

Question 1

linear nth term=?

Answer 1

A sequence is linear if the first difference is constant

Question 2

Quadratic nth term=?

Answer 2

A sequence is quadratic if the second difference is constant

Question 3

Area of a triangle=?

Answer 3

base x vertical height divided by 2

Question 4

Area of rectangle=?

Answer 4

length x width

Question 5

Area of a circle=?

Answer 5

pi x radius squared

Question 6

Percentage to Decimal

Answer 6

divide by 100

Question 7

Decimal to percentage

Answer 7

x 100

Question 8

Fraction to Decimal

Answer 8

divide the numerator by the denominator

Question 9

Increasing the number by a percentage

Answer 9

x the number by-the percentage divided by 100

then add the original number with the new percentage

Question 10

how to find the mean

Answer 10

add up the numbers and divide by how many numbers there are in the sequence

Question 11

how to find the median

Answer 11

the middle number is the median (order numbers first)

Question 12

how to find the range

Answer 12

the biggest number subtract the smallest number

Question 13

qualitative

Answer 13

words eg what’s your favourite food?

Question 14

quantitative

Answer 14

numbers eg how many siblings do you have?

Question 15

acute angles

Answer 15

under 90 degrees

Question 16

obtuse angles

Answer 16

over 90 degrees

under 180 degrees

Question 17

reflex angles

Answer 17

over 180 degrees

Question 18

right angles

Answer 18

90 degrees

Question 19

pie charts are out of

Answer 19

360 degrees

Question 20

scatter graphs are used for

Answer 20

to compare two categories

Question 21

square roots

Answer 21

it is a number which when multiplied by itself produces the given number

Question 22

a cube root

Answer 22

it is a number which when multiplied by itself three times produces the given nuber