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There are 15 pots of orchids in the classroom of the soldier class. How many pots are there outside teacher Bing Bing?
Orchid * * * has 15 "empty", so it also needs 15 pots of chrysanthemums, so it is 30 pots of flowers.

There are many types of mathematical problems, which vary according to the nature of mathematics and different situations. The score is as follows: 1. According to the question:

1, fill in the blanks.

2. multiple choice questions.

3. Application questions.

4. Comprehensive application questions.

5. Choose a topic.

Second, classified by nature:

1, number problem.

2, algebra problems (divided into multiple categories. Such as factorization, equation, calculus, etc. ).

3. Geometric problems (including plane geometry problems, solid geometry problems, analytic geometry problems, vector geometry problems, etc.). ).