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Listed under: Mathematics > Number (Mathematics) > Numeral systems > Place value

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MathXplosion, Ep 6: Zero the hero

TLF-IDM024939

What is the role of zero as a placeholder for large numbers such as 1 million, 1 billion and 1 trillion? Find out about the notion of place value and powers of ten through the act of bead counting.

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BTN: What is an abacus?

TLF-IDM021154

An abacus is a tool that helps people solve maths problems. Why might some people still use, and encourage the use of, an abacus when there are more contemporary tools like calculators?