IGCSE Maths Flashcards

Use tree diagram to find the product of prime numbers, (do factors and when prime number circle it) multiply the common ones from each number.

Use tree diagram to do prime factorisation then multiply all the ones together without repeating from both numbers.

write x = recurring decimal, times both sides by ten. then take away 1x to remove the recurring decimal numbers and be left with the whole number. then simplify.

positive whole numbers, starting from 1.

whole numbers (positive, zero and negative)

Rational numbers can be expressed as a fraction where both sides are integers, but irrational numbers can't.

a number that is found by dividing 1 by that number

element is in set

element isn't in set

The empty set

A is a subset of B

A is not a subset of B

all elements that are in either set A, or set B, or both

The elements in both sets, intersection of Venn diagram

1 = 1²

4 = 2²

9 = 3²

16 = 4²

25 = 5²

36 = 6²

49 = 7²

64 = 8²

81 = 9²

100 = 10²

121 = 11²

144 = 12²

169 = 13²

196 = 14²

225 = 15²

1 = 1³

8 = 2³

27 = 3³

64 = 4³

125 = 5³

216 = 6³

343 = 7³

512 = 8³

729 = 9³

1000 = 10³

1. When multiplying indices with the same base, add the powers.
2. When dividing indices with the same base, subtract the powers.
3. When there is a power outside the bracket multiply the powers.
4. x to the power of 0 = 1
5. When the index is negative, put it over 1 and flip (write its reciprocal) to make it positive x-m = 1/xm
6. When the index is a fraction, the denominator is the root of the number or letter, then raise the answer to the power of the numerator. x^a/b =( ^b√x)^a

PRT/ 100

principal (original amount) x interest rate x time / 100

P(1 + r/100)ⁿ

Principal( 1 + rate/100)^{number of years}

P(1+r)ⁿ and. P(1-r)ⁿ

Frequency / class width

Speed difference / time

x^o /360 x π x r²

Where n is the number of sides