maths 2

• 2/3 and 4/6 are called equivalent fractions
• mixed numbers: made up of a whole and a fraction
• improper fractions: numerator is bigger than the denominator
• to change fractions into a percentage you can multiply the fraction by 100
• When denominators are the same we need to add or subtract only the numerators
• when the denominators are different find the first LCM and then work out as usual give your answer in its lowest form
• to add whole fractions together you first need to add the whole then add the fraction and always give your answer as a mixed number
• to see which fraction is bigger or smaller we need to get the fraction with the same denominator
• First multiply the numerator then multiply those in the denominator
• to divide by a fraction you need to turn the second fraction upside down and then we multiply
• The reciprocal of a number is 1 division by that number
• before finding the reciprocal of a mixed number change it to an improper fraction
• When multiplying or dividing mixed numbers first change them to improper fractions and then multiply and divide as usual