The cards Question What does a ratio show? Tap to flip Answer The relative sizes of two or more values, letting you compare one part with another part in a whole. Question What is a unitary ratio? Tap to flip Answer Any ratio in which one part is 1. Question How many ratios are equivalent to a given ratio? Tap to flip Answer Infinitely many. Question When is a ratio in its simplest form? Tap to flip Answer When the HCF of all its parts is one and all the parts are integers. Question Is a ratio in unitary form always a simplified ratio? Tap to flip Answer No. A ratio in unitary form may not be simplified. Question To simplify a ratio by dividing by a common factor, which parts must share that factor? Tap to flip Answer Every part of the ratio. Question What is a reciprocal? Tap to flip Answer The multiplicative inverse of a non-zero number. Question What do you get when you multiply a non-zero number by its reciprocal? Tap to flip Answer 1 Question Which number is the multiplicative identity? Tap to flip Answer One (1). Question What kind of relationship is a multiplicative relationship? Tap to flip Answer A proportional relationship. Question What can the multiplier in a multiplicative relationship be thought of as? Tap to flip Answer A scaling factor. Question When working with ratios, should you look for the additive or the multiplicative relationship between numbers? Tap to flip Answer The multiplicative relationship. Question Using 1 as a middle step, how do you connect 5 to 8 multiplicatively? Tap to flip Answer Divide by 5 to make 1, then multiply by 8. Question Why must the parts of a bar model for a ratio be equal? Tap to flip Answer Otherwise the ratio is not represented correctly. Question When sharing in a ratio, what might the amount given in the question be? Tap to flip Answer The total, one part, or the difference between parts. Question What is a proportion? Tap to flip Answer A part to whole (sometimes part to part) comparison. Question If two things are proportional, what is maintained? Tap to flip Answer The ratio of part to whole, and the multiplicative relationship between the parts. Question What must stay the same when a recipe is scaled up or down? Tap to flip Answer The proportions of the ingredients. Question What must you check about units before simplifying a ratio of quantities? Tap to flip Answer That all the quantities are in the same units. Question What does LCM stand for? Tap to flip Answer Lowest common multiple. Question What is the lowest common multiple of two or more numbers? Tap to flip Answer The lowest number that is a multiple of all of them. Question If you know A : B and B : C, which other ratios can you write? Tap to flip Answer A : B : C and A : C Question When the common quantity is not the same in two ratios, what do you use to combine them? Tap to flip Answer Equivalent ratios. Question If you have A : B and 2B : 5C, what combined ratios can you write? Tap to flip Answer 2A : 2B : 5C and 2A : 5C Question What happens to a ratio if the relationship between its parts is changed? Tap to flip Answer The ratio changes. Question When a ratio changes, what can be used to work out the quantities? Tap to flip Answer Equivalent ratios. Question What are coordinates? Tap to flip Answer A set of values that show an exact position. Question What is an expression? Tap to flip Answer One or more terms, with each term separated by an operator. Question What is the probability that an event will occur? Tap to flip Answer The proportion of times the event is expected to happen in a suitably large experiment. Where this deck sits in the curriculum Curriculum National Curriculum for England Stage GCSE (Years 10–11) Course GCSE Maths Unit Ratio Tiers foundation and higher England's National Curriculum sets what is taught; the units and their order are Oak National Academy's. Flash Feed is not affiliated with Oak or any exam board.
How this deck was checked On 2026-11-02, every card was compared with its source: the lessons of Oak National Academy, a public body funded by England's Department for Education that publishes lessons for the national curriculum. Because the cards come from those lessons, no second source was sought. The comparison was done automatically, not by a teacher, so a card can still be wrong. Flash Feed is not affiliated with any source named here.
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A Maths lesson by Oak National Academy licensed under Open Government Licence (OGL)
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