Mental Math Worksheets for Grade 5 | Free Printables | Homework If these are too easy or too challenging, check out grade 4 mental math worksheets or grade 6 mental math worksheets! Also, check out the division mental math strategy down below! Click on the images below to download the free mental math worksheets. Click to Preview. $23.00. Daily Mental Maths. Click to Preview. $5.00. Click to Preview.