Math Review for Third Grade &Level up to Fourth Grade Lesson Intentions: The work sections in the third-grade kit include: Representing Numbers; Comparing and Rounding Numbers; Ordering numbers; Adding, Subtracting, Multiplying, and Dividing Whole Numbers; Table of Multiples, Prime and Composite Numbers; Simplifying Fractions; Fraction Number Line; Graphs, charts, and plots; Pre-Algebra; Two-dimensional figures; Area of rectangles and squares; Perimeter of rectangles and squares; Using Conversi