1Value depends on position
4,326=4,000+300+20+6 Moving one place left makes a digit ten times as valuable.
2Base-ten blocks
A small cube represents 1, a rod 10, a flat 100 and the 3D gridded cube represents 1,000.
3Rounding
Find the target place, then inspect the digit immediately to its right: 5 or more rounds up.
4Place value chart
Every column is worth ten times the column to its right, from millions down to thousandths. The same digit means something different in each column.
💡Zero is a placeholder: it keeps every other digit in its correct place.