题目内容
1 .Seven_three is four.
2. Ten six is sixteen.
3. Fifteen_by three is five.
4. Three_by six is eighteen.
1. minus 2. plus 3. divided 4. multiplied
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题目内容
1 .Seven_three is four.
2. Ten six is sixteen.
3. Fifteen_by three is five.
4. Three_by six is eighteen.