When Olympic swimmer Michael Phelps won a race by .01 of a second, we saw how significant a hundredth of a second can be! This series offers practice with decimals to build a solid understanding of the place value system.

This workbook will challenge your fourth grader with math formulas, shapes practice and angle activities. Kids will also learn how to find areas and perimeters, classify triangles and calculate time.

Volume is the measurement of space occupied in three dimensions. Practice calculating the volume of 3-D shapes using a variety of techniques and with real-life examples through a series of engaging problems and questions.