Cardinal Numbers

7 + 8 = ?

• ten

• fifteen

• eleven

• thirteen

9 + 19 = ?

• eighteen

• twenty-six

• thirty-two

• twenty-eight

24 + 36 = ?

• fifty-eight

• sixty

• sixty-two

• seventy

21 – 7 = ?

• fourteen

• eleven

• ten

• twelve

12 – 3 = ?

• six

• nine

• fifteen

• seven

99 – 33 = ?

• sixty-three

• fifty-six

• sixty-six

• thirty-three

54 – 13 = ?

• thirty-seven

• twenty-nine

• seventy-seven

• forty-one

3 x 4 = ?

• twelve

• seventeen

• seven

• one

4 x 20 = ?

• twenty-four

• thirty-six

• eighty

• sixteen

6 x 13 = ?

• sixty-three

• seventy-eight

• nineteen

• thirty-six