问题
填空题
| 计算，并填写表示数字的单词。 |
| 1. twenty + thirty = _________________ 2. fifty － ten = _________________ 3. five × seven = _________________ 4. fifty ÷ five = _________________ 5. fifty － one － twenty + twelve = _________________ |
答案
1. fifty 2. forty 3. thirty-five 4. ten 5. forty-one