Skill Sharpeners Math, Grade 4 provides practice for the following mathematics skills: computation using addition, subtraction, mulitplication, and division, decimals, fractions, rounded numbers and; estimation, place value, factors, multiples, prime numbers, area and perimeter, symmetry, graphing, grids, charts, and tables, money and; time, linear measurement, weight and temperature, time, logic puzzles, Parents have a wonderful opportunity to support what happens in the classroom, inspiring their child's desire to learn. The math skills practiced in the Skill Sharpeners Math series are based on the five strands of the National Council for Teachers of Mathematics (NCTM) standards: number and operations, measurement, geometry, algebra, data analysis and probability. Each book in Skill Sharpeners Math contains ten units of grade-appropriate practice to help your child understand and maintain important math skills. After every unit, there is an assessment that tests your child's understanding of the skills covered. Some questions are presented in standardized test format.