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Twenty means two tens, or 10 and 10 together.

Twenty means two tens, or 10 and 10 together.

If you put two groups of ten side by side, you get 20. That is why twenty is written with a 2 and a 0.

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More facts about Numbers 11 20

The numbers 11 to 20 come right after 10. The numbers 11 to 20 come right after 10. Eleven and twelve have special names, but 13 to 19 end in 'teen'. Eleven and twelve have special names, but 13 to 19 end in 'teen'. Each number from 11 to 20 is one ten plus some ones. Each number from 11 to 20 is one ten plus some ones. In Vietnamese, 11 is 'mười một', which means 'ten one'. In Vietnamese, 11 is 'mười một', which means 'ten one'. The 'teen' in thirteen to nineteen really means 'plus ten'. The 'teen' in thirteen to nineteen really means 'plus ten'.