Ответ:

20 — twenty; 27 — twenty-seven; 30 — thirty; 37 — thirty-seven; 71 — seventy-one; 100 — one hundred.

1) five — 5; 2) three — 3; 3) ninety-nine — 99; 4) eighty-four — 84; 5) sixty-four — 64; 6) seventy — 70.