Whole Numbers and Fractions! SOS 4th Grade Math, packed with helpful information, offers you and your student a unique, thorough examination of the fundamentals of arithmetic. Watch your student build the following skills in: Multiplication Facts, Rounding and Estimating Numbers, Lines and Shapes, Perimeter and Area, Prime and Composite Numbers. Essential information also included is Roman Numerals, plane and solid shapes, decimals, and an in-depth look at fractions. SOS 4th Grade Math also contains easy-to-grasp answers for those challenging questions! Their understanding will increase as they study factors, multiples,expressions, and missing number problems. Windows XP SP2/Vista.