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A ratio is a way of comparing two or more similar quantities. A ratio of 2cm to 5cm is written as 2 : 5. A ratio is normally written using whole numbers only, with no units, in its simplest form. The numbers in a ratio must be written using the same units. If they are not, they should be converted to the same units.
1 Definition of a Fraction. Recall that a number is a point on the number line (§5 of Chapter 1). This chapter deals with a special collection of numbers called fractions, which are usually denoted bym n. , where m and n are whole numbers and n 6= 0.
RATIO & PROPORTION. A RATIO is a comparison between two quantities. We use ratios everyday; one Pepsi costs 50 cents describes a ratio. On a map, the legend might tell us one inch is equivalent to 50 miles or we might notice one hand has five fingers. Those are all examples of comparisons – ratios.
Expressing a ratio as a fraction or percentage pdf. Examples. Workout. Click here. Question 1: The ratio of red apples to green apples in a basket is 1:2. (a) What fraction of the apples in the basket are red? (b) What fraction of the apples in the basket are green? Question 2: The ratio of blue pens to black pens in a box is 3:5.
PDF. Ready-to-use mathematics resources for Key Stage 3, Key Stage 4 and GCSE maths classes.
Simplifying ratios with whole numbers is similar to simplifying fractions. In fact we can write our ratios as fractions, reduce the fraction, and then convert back to ratio notation.
Convert a fraction to a ratio using a simple calculator. The calculator shows all the work so you can see the steps used to solve.
