Subtitle from cover.

Includes index.

pt. 1. The world of numbers -- 1. Our number system -- The counting numbers -- Scientific notation -- Rounding -- 2. Arithmetic -- Addition and subtraction -- Multiplication and division -- 3. Order of operations and integers -- Order of operations -- The distributive property -- The integers -- Arithmetic with integers -- 4. Factors and multiples -- Prime numbers -- Prime factorization -- Greatest common factor -- Least common multiple -- 5. Fractions -- The rational numbers -- Arithmetic with fractions -- 6. Decimals -- Decimal fractions -- Powers and scientific notation revisited -- Arithmetic with decimal fractions -- Rational and irrational numbers -- 7. Ratios, proportions, and percentages -- Proportional reasoning -- Calculating with percentages -- pt. 2. Into the unknown -- 8. Variables and expressions -- Using variables -- Multiplying with variables -- Dividing with variables -- 9. Adding and subtracting with variables -- "Like terms" -- Adding and subtracting like terms -- Simplifying expressions -- Polynomials -- 10. Solving equations and inequalities -- Using equations to find the missing number -- One solution or many? -- 11. Coordinate graphing -- The coordinate plane -- Graphing linear equations -- Graphs of inequalities -- pt. 3. The shape of the world -- 12. Basics of geometry -- Points, lines, planes and angles -- Parallel and perpendicular lines -- 13. Triangles -- Facts about triangles -- Classifying triangles -- Right triangles -- Area and perimeter -- 14. Quadrilaterals and other polygons -- Parallelograms -- Rectangles -- Rhombuses and squares -- Trapezoids -- Perimeter of quadrilaterals -- Area of quadrilaterals -- Polygons with more than four sides -- 15. Circles -- The language of circles -- Segments and angles -- Lines and angles -- Area and circumference -- Circles in the coordinate plane -- 16. Surface area and volume -- Measuring solids -- Prisms -- Pyramids -- Cylinders -- Cones -- Spheres -- 17. Geometry at work -- Areas of irregular figures -- Similarity and congruence -- Indirect measurement with similar triangles -- Indirect measurement with trigonometry -- pt. 4. The state of the world -- 18. Probability -- Counting methods -- Relative frequency -- Theoretical probability -- Probability of compound events -- 19. Graphs -- Bar graph -- Histogram -- Circle graph -- LIne graph -- 20. Measures of center and spread -- The centers -- The separators -- The spread -- pt. 5. Extra practice -- Arithmetic -- Algebra -- Geometry -- Probability and statistics.

Math skills come easily to some people, but for others, the number just don't add up. This helpful guide gives you a solid foundation in mathematics, with clear explanations, handy tutorials, and practice problems and answers.