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Contents of this section Information about decimals
	Importance of decimals Whole numbers are not enough! When is a point a decimal point?
	History of decimals and the metric measurement system Decimal money and metric measurement The evolution of notation for decimals
	Decimals as a mathematical system Can two different decimals be equal? Mathematical differences between fractions and decimals Density and completeness
	Decimals for measurement, when 12.00 is not the same as 12.0 Rounding numbers and significant figures
Children's thinking about decimals
	What needs to be understood The decimal-fraction link Generalising whole number place value properties Special properties of decimals
	Difficulties for non-English speakers
	False or misleading analogies