Grade 9 Extra Practice Worksheets - Google Search Grade 9 Extra Practice Worksheets. Unit 1 Square Roots and Surface Area. Unit 2 Powers and Exponent Laws. Unit 3 Rational Numbers. Unit 4 Linear Relations. Unit 5 Polynomials. Unit 6 Linear Equations and Inequalities. Unit 7 Similarities and Transformations. Unit 8 Circle Geometry.