In this 5.NF.2 Fifth Grade Common Core Lesson, students solve word problems involving adding and subtracting fractions with uncommon denominators.

IIn this 4.NF.3 Fourth Grade Common Core Lesson, students add fractions and mixed numbers with common denominators.

In this 4.NF.5 Fourth Grade Common Core Lesson, students express a fraction with denominator 10 as an equivalent fraction with denominator 100, and thenadd two fractions.

In this 1.OA.8 First Grade Common Core Lesson, students find the unknown whole number in addition equations up to 20.

This 2.NBT.9 Second Grade Common Core Lesson includes 2.NBT.9 Worksheets, 2.NBT.9 Activities, 2.NBT.9 Assessment, and 2.NBT.9 Poster.

This 2.NBT.6 Second Grade Common Core Lesson includes 2.NBT.6 Worksheets, 2.NBT.6 Activities, 2.NBT.6 Assessment, and 2.NBT.6 Poster