写出正确的英文数字. 1. five + three = 2. + fifteen =

写出正确的英文数字。

1. five + three = ____________

2. ____________ + fifteen = thirty-one

3. five × ____________ = fifteen

4. thirteen + seven = ____________

5. ____________ ÷ two = seven

试题答案

1. eight 2. sixteen 3. three 4. twenty 5. fourteen