Arithmetic problem-solving 1 Article 1 Cerebral Cortex 1 Child 1 Cognition 1 Humans 1 Individuality 1 Math learning difficulties 1 Mathematics 1 Problem Solving 1 Representational similarity analysis 1 Wechsler Abbreviated Scale of Intelligence 1 Wechsler Individual Achievement Test Working Memory Test Battery for Children 1 behavior 1 brain cortex 1 child 1 clinical article 1 cognition 1 cognitive function test 1 cohort analysis 1 controlled study 1 decision making 1 dorsal-ventral patterning 1 female 1 functional magnetic resonance imaging 1 fusiform gyrus 1 human 1 human experiment 1 individuality 1