三、算一算,从下面方框中选择正确的单词补全算式并写在四线三格中。
twelve fourteen eleven fifteen ten thirteen
1. eight+six-four=
2. three×five=
3. fourteen−three=
4. eight÷four×six=
5. nine+two+three=
6. eight−two+seven=

1. ten
2. fifteen
3. eleven
4. twelve
5. fourteen
6. thirteen