This practice worksheet helps students master math standard 4.MD.4. Make a line plot to display a data set of measurements in fractions of a unit (1/2; 1/4; 1/8). Solve problems involving addition and subtraction of fractions by using information presented in line plots. For example; from a line plot find and interpret the difference in length between the longest and shortest specimens in an insect collection. Geometric measurement: understand concepts of angle and measure angles. Inclusions: Printable and editable | Student-friendly layout | Answer key