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Number Pieces


Number pieces help students develop a deeper understanding of place value while building their computation skills with multi-digit numbers. Students use the pieces to represent multi-digit numbers, regroup, add, subtract, multiply, and divide.

This virtual version of our Base Ten Area Pieces is an open-ended educational tool, ideal for elementary classrooms and other learning environments that use laptops, iPads, Chromebooks, or Windows devices.

Number pieces are a key component of Bridges in Mathematics, second edition. Online preview available.

App Features

  • Add and manipulate pieces (ones, tens, and hundreds).
  • Change the starting set of pieces to a basic or an advanced set.
  • Join pieces in groups of ten or break them apart (e.g., 10 ones into 1 ten and vice versa).
  • Use the expanding edge piece like a measuring tape to show the dimensions of arrays created with the pieces.
  • Choose from three different colors to clearly identify groups or pieces.
  • Move, rotate, and duplicate pieces individually or as a group.
  • Use the drawing tools to label representations and show understanding.
  • Add equations, expressions, and descriptions with the math text and writing tools.
  • Zoom and scroll to work with larger collections of pieces.

Share your work by saving an image or providing a share code to others.

Curriculum Alignment:
CAPS aligned
Publication Date:
Software Requirements:
This app is based on the visual models featured in Bridges in Mathematics. And is available in two or more versions: a web app for all modern browsers, and downloadable versions for specific operating systems and devices (such as Apple iOS for iPad). App system requirements: Apple iOS versions 11.4 and above. Chromebooks platform versions 4920.71.0 and above. Windows versions 8 and 10. Browsers for web app (HTML5): Safari 6.1 and above, Mozilla Firefox 31 and above, Microsoft Internet Explorer 10 and above, and Google Chrome 38 and above.
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