Large collection of free worksheets for pre-algebra. Useful for teachers of Maths/Mathematics.*1*BASICS*2*Naming decimal places*4*Reading and writing whole numbers*4*Rounding numbers*1*NUMBER THEORY*2*Divisibility and factors*4*Factoring numbers*4*Factoring monomials*4*Greatest common factor*4*Least common multiple*1*ALGEBRAIC EXPRESSIONS*2*Evaluating variable expressions*4*Simplifying variable expressions*4*The distributive property*1*INEQUALITIES*2*Graphing single-variable inequalities*4*One-step inequalities by adding/subtracting*4*One-step inequalities by multiplying or dividing*4*Two-step inequalities*4*Multi-step inequalities*1*PLANE FIGURES*2*Rigid Transformations*4*Translations*4*Rotations*4*Reflections*4*Angle relationships*4*The Pythagorean Theorem*4*The distance formula*4*The midpoint formula*4*Classifying triangles and quadrilaterals*4*Angle sum of triangles and quadrilaterals*4*Area of triangles*4*Area of squares, rectangles, and parallelograms*4*Area of trapezoids*4*Area and circumference of circles*1*LINEAR FUNCTIONS*2*Finding slope*4*Graphing lines using slope-intercept form*4*Graphing lines using standard form*4*Writing linear equations*4*Graphing linear inequalities*1*SYSTEMS OF EQUATIONS*2*Solving systems of equations by graphing*4*Solving systems of equations by substitution*4*Systems of equations word problems*1*WORD PROBLEMS*2*One-step equation word problems*4*Two-step equation word problems*4*Proportion word problems*4*Similar figure word problems*4*Systems of equations word problems*1*ARITHMETIC*2*Rounding numbers*4*Converting between fractions and decimals*4*Converting between percents, fractions, and decimals*4*Variable and verbal expressions*4*Adding and subtracting integers*4*Adding and subtracting decimals*4*Adding and subtracting fractions and mixed numbers*4*Dividing integers*4*Multiplying integers*4*Multiplying decimals*4*Multiplying and dividing fractions and mixed numbers*4*Order of operations*4*Evaluating variable expressions*1*PROPORTIONS AND PERCENTS*2*Converting between percents, fractions, and decimals*4*Percent problems, straightforward*4*Finding percent change*4*Markup, discount, and tax (easy, hard)*4*Proportions*4*Proportion word problems*4*Similar figures*4*Similar figure word problems*4*Simple and compound interest*1*EQUATIONS*2*One-step equations containing integers*4*One-step equations containing decimals*4*One-step equations containing fractions*4*One-step equation word problems*4*Two-step equations containing integers*4*Two-step equations containing decimals*4*Two-step equation word problems*4*Multi-step equations*1*SOLID FIGURES*2*Classifying solids*4*Volume*4*Surface area*1*POLYNOMIALS*2*Factoring monomials*4*Adding and subtracting polynomials*4*Multiplying a polynomial and a monomial*4*Multiplying binomials*1*EXPONENTS AND RADICALS*2*Multiplication property of exponents*4*Division property of exponents*4*Powers of products and quotients*4*Writing scientific notation*4*Square roots