Tens and numbers 21–99

20 – twenty, 30 – thirty, 40 – forts, 50 -fifty, 60 – sixty, 70 – seventy, 80 – eighty, 90 – ninety.

Composite numbers are formed by joining the tens and ones with a dash:

• 21 – twenty-one
• 34 – thirty-four
• 47 – forty-seven
• 58 – fifty-eight
• 63 – sixty-three
• 75 – seventy-five
• 89 – eighty-nine
• 92 – ninety-two

Note: fortsthere is no "u" for "four"!

Hundreds

100 – one hundred, 200 – two hundred, 300 – three hundred, 400 – four hundred, 500 – five hundred, 600 – six hundred, 700 – seven hundred, 800 – eight hundred, 900 – nine hundred.

Compound numbers with hundreds:

• 123 – one hundred (and) twenty-three
• 250 – two hundred and fifty
• 365 – three hundred and sixty-five
• 999 – nine hundred and ninety-nine

Important: when a number comes before a noun, we do not add the ending-s: two hundred people, five hundred cars.

Thousands, millions and billions

1,000 – one thousand, 2,000 – two thousand, 10,000 – this thousand.

1,000,000 – one million, 2,000,000 – two million.

1,000,000,000 – one billion.

Note: in English (short scale) a billionis one billion (9 zeros). In Poland, a billion is 9 zeros, so it fits together.

Examples:

• 2,345 – two thousand three hundred and forty-five
• 5,000,000 – five million
• 1,500,000,000 – one billion five hundred million
• 1,000,000,000,000 – one trillion