Maths: Percentages without a calculator worksheets

Need to spice up this rather dry topic. For this dot to dot have students join question number to answer, e.g. Q1 find 10% of 80 so join 1 to 8. You must say to them to then do Q8 rather than 2 for two reasons: 1. it's quicker as you know where dot 8 is and don&'t need to waste time searching for dot 2. 2. The questions gradually get harder around the shape.