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In this 4.NBT.4 Fourth Grade Common Core Lesson, students add and subtract multi-digit whole numbers.
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.
IIn this 4.NF.3 Fourth Grade Common Core Lesson, students add fractions and mixed numbers with common denominators.
