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A1 فتاح، سديل عادل. AB The research aims to find out the relationship between mental arithmetic and estimate approximate skill and solving mathematical problems among sixth grade students in :Baghdad by answering the following questions Is there a statistically significant correlation between mental arithmetic and approximate estimate the sixth grade pupils skill? Is there a statistically significant correlation between mental arithmetic skill and solving mathematical problems among sixth graders Primary? Is there a statistically significant correlation between the rough estimate and solving mathematical problems among sixth grade students? Be the research community of the disciples of sixth grade in the city of Baghdad / Rusafa first for the academic year 2015/2016, where numbered (8710), a pupil was chosen from a random sample consisted of 302 pupils either search tool is about three tests, one of them related to the account the mental and the other approximate estimate and last sports problems and after verifying the validity and reliability of the tests were applied to the sample and the results showed the weakness of students in mental arithmetic and estimate approximate skill and solving math problems and the existence of a correlation between them. The study concluded that a number of recommendations including: Further research on an objective mental arithmetic and solving math problems, and include mathematics curriculum activities develop mental arithmetic and approximate estimate and solving math problems. (Published Abstract) http://search.shamaa.org/abstract_en.gif ID 121488 OP ص ص. 29-56 T1 العلاقة بين مهارة الحساب الذهني والتقدير التقريبي وحل المشكلات الرياضية لدى تلاميذ الصف السادس الإبتدائي [مقال] UL 1 http://search.shamaa.org/fulltext.gif https://www.iasj.net/iasj/article/113185 النص الكامل (PDF)