maths unit 2

Question 1

how do you work out a fraction of an amount when it is simple

Answer 1

times by the top number divide by the bottom number

Question 2

how do you work out a fraction of an amount when its complex

Answer 2

add a one on the bottom of the number that is not the fractions and multiply the two fractions like normal

Question 3

how do you estimate

Answer 3

1.round the numbers - most of the time round to 1 or 2 significant figures
2.work the answer out using the simplified numbers

Question 4

how do you turn an improper fraction in to a mixed fraction

Answer 4

1.devide the top to the bottom
2.write down how many times it goes in as the mixed number
3.add how much is remains as the numerator

Question 5

how do you calculate the percentage change

Answer 5

changed number divided by the original number multiplied by 100 - if the charged number is smaller than the original it has decreased of it is bigger than it is an increased number (always write if the number increased or decreased)