Pre-Algebra Skills: (Grades 6-8) Middle School Math Workbook (Prealgebra: Exponents, Roots, Ratios, Proportions, Negative Numbers, Coordinate Planes, Graphing, Slope, Order of Operations (PEMDAS), Probability, & Statistics) - Ages 11-15 (With Answer Key)

Humble Math - 100 Days of Decimals, Percents & Fractions: Advanced Practice Problems (Answer Key Included) - Converting Numbers - Adding, Subtracting, Multiplying & Dividing Decimals Percentages & Fractions - Reducing Fractions - Math Drills

Humble Math - 100 Days of Timed Tests: Multiplication: Ages 8-10, Math Drills, Digits 0-12, Reproducible Practice Problems

Humble Math - 100 Days of Timed Tests: Addition and Subtraction: Ages 5-8, Math Drills, Digits 0-20, Reproducible Practice Problems

Humble Math - 100 Days of Money, Fractions, & Telling the Time: Workbook (With Answer Key): Ages 6-11 - Count Money (Counting United States Coins and Bills), Learn Fractions, Tell Time - Grades K-4