Landmarks and Large Numbers Investigations in Number, Data, and Space, Grade 4: Curriculum Unit 5 Teacher's Guide
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Landmarks and Large Numbers Investigations in Number, Data, and Space, Grade 4: Curriculum Unit 5 Teacher's Guide
Landmarks and Large Numbers: Addition, Subtraction, and the Number System Students extend their knowledge of the number system by examining the structure of 10,000 and practice and refine strategies for adding and subtracting whole numbers up to 10,000. They continue to study place value by adding and subtracting multiples of 10 and 100 to numbers in the thousands, and they consolidate their understanding of the operation of addition by studying a variety of addition strategies and algorithms, including the U.S. algorithm for addition. Students continue their study of subtraction by solving, representing, and discussing their strategies for a variety of subtraction problems.