Start with the sections you need improvement in or do all the topics for a comprehensive coverage.
Quantitative Reasoning tests four broad areas of quantitative ability. We have further subdivided these into 9 areas.

ARITHMETIC A
Numbers Classification
Number Line
Even and Odd numbers
Divisibility
Remainders
Estimation

ARITHMETIC B
Prime Numbers
Fractions
Factorization
Exponents and Roots
Arithmetic Operations
Absolute Value

ARITHMETIC C
Decimals
Percents
Ratios and Proportions
Rate problems
Sequences
Factorials

ALGEBRA A
Algebraic Operations
Factoring and Simplification
Functions
Equations and Inequalities

ALGEBRA B
Linear Equations
Quadratic Equations
Simultaneous Equations and Inequalities
Word Problems

ALGEBRA C
Coordinate Geometry
Graphs of Functions
Intercepts
Slopes of lines

GEOMETRY
Lines and Angles
Triangles
Quadrilaterals and Polygons
Circles
Solid Geometry

DATA ANALYSIS A
Mean, Median, and Mode
Range
Standard Deviation
Interquartile Range
Graphs
Frequency Distribution

DATA ANALYSIS B
Probability
Probability Distribution
Counting Methods
Permutation and Combination
Venn Diagrams
