Fractions · Usually met around P6
Ratio and rate
From “What a ratio is” to “Enlarging and shrinking shapes”, step by step, each skill with its methods, worked examples and answers.
Skills in this topic, easy to hard
- What a ratio isTerms in the words' order; the whole is the parts added
- Equivalent ratios and simplest formDivide every term by the HCF
- Sharing in a ratioFind what one box is worth first
- Ratios and fractionsOf the whole: the denominator is all the parts
- Rates and unit pricesFind the amount for one unit first
- Map and model scalesMap to real: multiply. Real to map: divide
- Enlarging and shrinking shapesEvery side times the same number; angles stay the same
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