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**In This Unit of Study…**

Students extend their understanding and application of place value concepts in the base 10 system. Students extend their understanding and application of place value concepts in the base-10 system as they encounter multi-digit numbers with decimals to the thousandths place. Students reason about the magnitude of numbers by recognizing that a digit in one place represents 10 times as much as it represents in the place to its right and 1/10 of what it represents in the place to its left. Students use concrete and representational manipulatives, such as decimal squares, base-ten blocks, place-value charts, drawings, and interactive digital tools to investigate place value relationships.

**B.E.S.T. Benchmarks: **

**MA.5.NSO.1.1**Express how the value of a digit in a multidigit number with decimals to the thousandths changes if the digit moves one or more places to the left or right.

**Key Concepts:**

- I can make sense of place value within multidigit numbers, including decimal numbers to the thousandths place.
- I can reason that a digit in one place represents 10 times what it represents in the place to its right and 1/10 of what it represents in the place to its left.
- I can recognize patterns in the number of zeros at the end of products when multiplying by multiples of 10 and powers of 10.
- I can reason about where to place the decimal point when a decimal is multiplied or divided by a power of 10.