7th Grade Mathematics Worksheets: FREE & Printable - Effortless Math 7th Grade Mathematics Concepts Fractions and Decimals Simplifying Fractions Adding and Subtracting Fractions Multiplying and Dividing Fractions Adding and Subtracting Mixed Numbers Multiplying and Dividing Mixed Numbers Adding and Subtracting Decimals Multiplying and Dividing Decimals Comparing Decimals Rounding Decimals Factoring Numbers