What makes a computational strategy both efficient and effective?
How do mathematical ideas interconnect and build on one another to produce an answer?
How can the four operations in decimals related to one another?
How does one recognize the strategy to be used for a specific operation?
How can models help us understand decimals?
How can we determine the reasonableness of an answer when solving a problem?
How are decimals different from whole numbers?
LP 5.NBT.B.5-7 Multiplying Decimals to Hundredths
Lesson Seed B.5: Standard Algorithm for Multiplication Based on Place Value
Lesson Seed B.7: Addition & Subtraction with Decimals
Content Emphasis By Clusters in Grade 5
Progressions from Common Core State Standards in Mathematics
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Lesson seeds are ideas that can be used to build a lesson aligned to the CCSS. Lesson seeds are not meant to be all-inclusive, nor are they substitutes for instruction. When developing lessons from these seeds, teachers must consider the needs of all learners. It is also important to build checkpoints into the lessons where appropriate formative assessment will inform a teachers instructional pacing and delivery.
Standard(s): 5.NBT.B.7 Add, subtract, multiply, and divide decimals to hundredths, using concrete models or drawings and strategies based on place value,
properties of operations, and/or the relationship between addition and subtraction; relate the strategy to a written method and explain the reasoning used.