问题 填空题 用合适的数词填空。1. six + five = ___________ 3. seven + eight = ___________5. twelve ÷ two = ___________ 2. ten + two = ___________ 4. fifteen － nine = ___________6. three × five = ___________ 答案 1. eleven 2. twelve 3. fifteen 4. six 5. six 6. fifteen
