Khan Academy Addition and Subtraction with Regrouping

Please use the links from Khan Academy below to practice and further understand the math skills we have been working on in class.  I would recommend watching one link per night since there is a lot information to review. Enjoy and have fun being a flexible mathematician, as you continue to think about different strategies and visualizing numbers in many different ways.

Breaking apart 3-digit addition problems

Adding and subtracting on number line

Worked example: Subtracting 3-digit numbers (regrouping)

Missing number for 3-digit addition within 1000


Geoboard Activities

It is important to understand shapes in different categories and understand that shapes may share attributes.

Create the following shapes on the Geoboard link below from your  math hand-out. You should include the following shapes:

  • Triangle
  • square
  • rectangle
  • parallelogram
  • rhombus
  • a quadrilateral with 0 right angles
  • a quadrilateral with 1 right angle
  • a quadrilateral with 2 right angles
  • trapezoid

Have Fun!