Education Technology

Number and Operations - 100 or Bust

Subject Area
Math: Elementary Math: Number Sense and Estimation
Level
K-5
Activity Time
60 Minutes
TI Calculator
TI-15 Explorer™/TI-10
Other Materials
    This is Activity 1 from the EXPLORATIONS Book:
    Uncovering Math with Manipulatives, the TI-10, and the TI-15 Explorer

    The following materials are required for this activity:
  • Number cubes (or dice)
  • Place-value materials
  • Pencils
  • Crayons or markers
  • Cubes, sticks, etc.
Resource Types
Lessons

Number and Operations - 100 or Bust

Activity Overview

Students explore the operations of addition, subtraction, multiplication, and division of whole numbers and integers.

Before the Activity

  • See the attached PDF file for detailed instructions for this activity
  • Print student activity sheet on page 4 from the attached PDF file for your class
  • During the Activity

    Distribute the page to the class.

    Follow the activity procedures:
    100 or Bust:

  • Use estimation, place-value materials, and the calculator to place seven randomly generated digits on a chart in either the ones or tens column to make a sum close to 100 as possible without going over 100
  • After the Activity

  • Review student results
  • As a class, discuss questions that appeared to be more challenging
  • Re-teach concepts as necessary
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    Download Files
    Subject Area
    Math: Elementary Math: Number Sense and Estimation
    Level
    K-5
    Activity Time
    60 Minutes
    TI Calculator
    TI-15 Explorer™/TI-10
    Other Materials
      This is Activity 1 from the EXPLORATIONS Book:
      Uncovering Math with Manipulatives, the TI-10, and the TI-15 Explorer

      The following materials are required for this activity:
    • Number cubes (or dice)
    • Place-value materials
    • Pencils
    • Crayons or markers
    • Cubes, sticks, etc.
    Resource Types
    Lessons
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