How To Use Number Pieces

Working with Number Pieces

Tap or click pieces onto the board. Then drag to move them. Tap or click a piece to select it.

Finger dragging individual Number Piece.

Drag on the background to select multiple pieces, or hold down shift while selecting individual pieces.

Finger circling around multiple pieces.

Change the length of an edge piece by dragging the arrow.

Finger dragging the blue arrow to extend edge piece.
Toggle between multicolored or all yellow counter sets.

Change the starting set of pieces to the basic or advanced set.

Toolbar & Keyboard Shortcuts

start over toolbar iconStart OverescClear all pieces, drawings, and text.
Break pieces toolbar iconBreak PiecesBBreak selected pieces apart into the next smallest size pieces.
Join pieces toolbar iconJoin PiecesJJoin selected pieces together into the next larger piece.
yellow colorgreen colorred colorChange ColorCChange the color of selected pieces.
duplicate toolbar iconDuplicateDDuplicate selected pieces.
rotate toolbar iconRotateRRotate selected pieces.
Zoom toolbar iconZoomZZoom the workspace in and out.
Math text tool iconMath Text ToolTOpen a keypad for creating expressions and equations. Using the keyboard to add numbers and symbols also works.
Tip: Double-tap your text to edit it.
Draw tool iconDrawing ToolsWOpen drawing tool and show the drawing layer.
Trashcan iconTrashbackspace, deleteDelete selected items.
Info iconInfoIView how-to and other information about this app.

Additional Keyboard Support

Move Piecesarrow keysMove selected pieces around the workspace.
Move Workspacespace +
click & drag
When zoomed in, drag the work space around.
Tip: For touch pads and screens, use two fingers to drag.
Change edge piece lengthshift +
arrow keys
Change the length of a selected edge piece.
Add unit piece1Add a unit to the workspace.
Add 10 piece - vertical2Add a vertical 10 piece to the workspace.
Add 10 piece - horizontal3Add a horizontal 10 piece to the workspace.
Add 100 piece4Add a 100 piece to the workspace.
Add edge piece - vertical5Add a vertical edge piece to the workspace.
Add edge piece - horizontal6Add a horizontal edge piece to the workspace.


Number Pieces helps students develop a deeper understanding of place value while building their computation skills with multi-digit numbers. Students can:

  • Use number pieces to represent multi-digit numbers, regroup, add, subtract, multiply, and divide.
  • Use edge pieces to display the dimensions of arrays created with number pieces.
  • Use the drawing and math text tools to label representations and show their understanding.

More Apps

For more Number Pieces resources, iPad version, and other apps, visit:


To learn about Bridges in Mathematics, an elementary curriculum that employs visual models such as number pieces, please visit:

About Us

This app is brought to you by The Math Learning Center, a nonprofit organization serving the education community since 1976. Visit us at:

The Math Learning Center


This app was made possible by a generous donation from Dr. David Moursund.

External link to Clarity Innovations

This app was crafted by Clarity Innovations. We help improve teaching and learning by creating solutions that match promising technologies with the needs of education. Visit us at:

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© 2018 Math Learning Center   |  Number Pieces version 3.1.2