Mental Math Worksheets | Grades 2-6 | Free Worksheets - FMW Free mental math worksheets for students in grades 2 to 6. Mental maths is an important part of Mathematics and must be done daily. ... This bundle includes all 3 Grade 2 Mental Maths in this series. $9.80. Grade 2/3. 70 weeks of grade 2 & 3 mental maths. Click to Preview. $23.00. Grade 3 Mental Maths. Grade 3. Click to Preview. $5.00. Grade 3.