Practice
Virtual abacus
Tap a bead to move it. The upper bead is worth 5, each lower bead is worth 1.
0
·
·
·
·
·
·
·
·
·
·
·
·
·
The rightmost rod is ones, the next is tens, then hundreds, and so on.
Practice
Tap a bead to move it. The upper bead is worth 5, each lower bead is worth 1.
The rightmost rod is ones, the next is tens, then hundreds, and so on.