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2 on an abacus

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2

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Enter any whole number from 0 to 9,999,999.

↑↓±1←→rodsRRandomCResetKeyboard: ↑/↓ ±1, ←/→ ±10, R random, C reset.

Quiz: set the number on the abacus

Level:
📖 View Step-by-Step Bead Positioning Guide (Optional)▼

Reading the abacus from the highest place value to the units column, 2 appears as follows: the millions column has no beads moved to the beam; the hundred-thousands column remains empty on this column; the ten-thousands column is clear with no active beads; the thousands column is set to zero; the hundreds column has no beads moved to the beam; the tens column remains empty on this column; the ones column reads 2 because the top bead stays clear while 2 lower beads are slid up.

  1. Step 1. First clear the frame so no rod is counting: top beads off the beam and lower beads fully lowered.
  2. Step 2. On the millions column, show 0. In practice, the millions column has no beads moved to the beam.
  3. Step 3. Set the hundred-thousands column for 0. Here, the hundred-thousands column remains empty on this column.
  4. Step 4. Adjust the ten-thousands column to 0. the ten-thousands column is clear with no active beads.
  5. Step 5. Configure the thousands rod for 0. That means the thousands column is set to zero.
  6. Step 6. On the hundreds column, show 0. In practice, the hundreds column has no beads moved to the beam.
  7. Step 7. Set the tens column for 0. Here, the tens column remains empty on this column.
  8. Step 8. On the ones column, show 2. In practice, the ones column reads 2 because the top bead stays clear while 2 lower beads are slid up.
  9. Step 9. Check each place value in order to verify that the abacus now shows 2.

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