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In this unit, students review place value in three-digit numbers. Students will:

  • explore a simple way to draw base-ten blocks.
  • match numbers and displays of base-ten blocks.

Essential Questions

  • How is mathematics used to quantify, compare, represent, and model numbers?


  • Digit: A symbol used to make a number. 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9 are the ten digits we use to write numbers.
  • Hundreds: The place third from the right in a number. In the number 2,435 the digit 4 is in the hundreds place.
  • Ones: The place all the way on the right in a number. In the number 2,435 the digit 5 is in the ones place.
  • Place Value: The value of the position of a digit in a number. In the number 7,863 the 8 is in the hundreds place and its value is 800.
  • Tens: The place second from the right in a number. In the number 2,435 the digit 3 is in the tens place.


45–60 minutes

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  • Current Rating





The resources in this unit are supportive in helping students understand the symmetry of shapes. For example, worksheet M-2 consists of the teacher creating a magnifying glass that students can use as a tool to investigate two dimensional shapes that already exist in their surrounding. The hands on approach to identifying two dimensional shapes is valuable.

Posted more than a year ago
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