1) seventy-one ➕ten ➯ a) eighty b) eighty-one c) eighty-two 2) ninety ➖seven ➯ a) seventy-three b) eighty-three c) seventy-four 3) fifty-five ➕fifteen ➯ a) seventy b) ninety c) eighty-nine 4) seventy-three ➕ seven ➯ a) eighty b) eighty-one c) seventy-one 5) eighty-nine ➕5 ➯ a) ninety-six b) ninety-four c) ninety-five 6) forty-four ➖six ➯ a) forty-nine b) thirty c) thirty-eight 7) twenty-three ➖four ➯ a) seventeen b) eighteen c) nineteen 8) sixty-two ➖three ➯ a) fifty-nine b) fifty-two c) sixty-five 9) thirty-one ➕ five ➯ a) thirty-one b) thirty-six c) thirty-four 10) ninety-four ➖ eight ➯ a) ninety-one b) eighty c) eighty-six 11) twenty-one ➕ seven  ➯ a) twenty-four b) twenty-five c) twenty-eight 12) seventy-two ➕ nine ➯ a) seventy-nine b) eighty c) eighty-one

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