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Each number from 11 to 20 is one ten plus some ones.

Each number from 11 to 20 is one ten plus some ones.

The number 13 is one ten and three ones. That is why it is written with a 1 and a 3 next to each other.

🔢 All Numbers 11 20 facts →

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'. Twenty means two tens, or 10 and 10 together. Twenty means two tens, or 10 and 10 together. 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'.