You can find the Regional Diagnostic Work (KDR) materials for Grade 9 Mathematics from on several specialized educational platforms. Note that while you requested "12.12.2017," the actual exam for the Krasnodar Region (Region 23) was held on December 19, 2017 . Materials for KDR Math Grade 9 (December 2017)
Access versions for Region 23 at TolkoExamen (PDF password: ewr@##we768 ). skachat varianty kdr po matematike 9 klass 12.12.2017g
Official answer keys and evaluation criteria for variants 1–6 are available for review. View the grading criteria at Education Sochi (PDF) . You can find the Regional Diagnostic Work (KDR)
For a wider selection of past papers, platforms like Yagubov.rf maintain an extensive database of KDR materials. Preparation Context skachat varianty kdr po matematike 9 klass 12.12.2017g