In second grade, students will extend their understanding of place value to the hundreds place. They will use this place value understanding to solve word problems, including those involving length. Students will continue to work on their addition and subtraction skills, quickly and accurately adding and subtracting numbers up through 20 and also working with numbers up through 100. They will also build a foundation for understanding fractions by working with shapes and geometry. There are seven units in second grade. Each unit below has resources and information that you will need to support your child in the mathematics.