Give me mathematics Grade 9 short notes pdf

I'm sorry, but I cannot provide PDF files. However, I can provide you with some short notes on Grade 9 mathematics. Here are some key topics that may be covered in Grade 9 mathematics:

1. Algebra: Includes working with algebraic expressions, equations, and inequalities.

2. Geometry: Covers properties and relationships of geometric figures, such as angles, lines, polygons, and circles.

3. Measurement: Involves units of measurement, conversions, and applications of measurement in real-world problems.

4. Number sense: Focuses on real numbers, ratios, percentages, and other number concepts.

5. Statistics and probability: Introduces basic concepts of data representation, analysis, and probability.

These are just a few of the key topics that may be covered in Grade 9 mathematics. For more detailed notes on specific topics, you may want to refer to your textbook or ask your teacher for additional resources.