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The aims of this research are: (1) Difference think critical mathematical ability of students in SMP N 3 Sibabangun with learning models metacognition and with learning models inquiri, (2) Difference ability solving problem mathematical students The SMP N 3 Sibabangun taught with learning models metacognition with students taught with learning models inquiry (3) Intration between ability early mathematics and learning to ability think critical mathematical students in SMP N 3 Sibabangun, (4) Intration between ability early mathematics and learning to ability solving problem mathematical students in SMP N 3 Sibabangun . Sample research this is students class VIII- A as class ekpserimen I (30 students ) and students class VIII-C (30 students) as class experiment II. The analysis used use ANOVA two lane . Results p enelitian this to show that : (1) No there is a significant difference learning with the metacognition model and with use the inquiry model to ability think critical mathematical students, (2) Not there is a significant difference learning with the metacognition model and with inquiry model to ability solving problem students, (3) Not there is interaction between learning models with ability early mathematics to ability think critical mathematical students, (4) No. there is interaction between learning models with ability early mathematics to ability solving problem students .