Generate a multiplication table

How it works

The top row and first column enumerate 1 through the selected limit, and each interior cell multiplies its row header by its column header. Column width follows the digit count of limit² so one- and multi-digit products remain aligned.

• The selected limit is required and capped at 20, producing at most 400 product cells.
• The range starts at 1 to keep the conventional positive-integer table without an all-zero row and column.

Worked example

											5
										

												Table:      1  2  3  4  5
  1  1  2  3  4  5
  2  2  4  6  8 10
  3  3  6  9 12 15
  4  4  8 12 16 20
  5  5 10 15 20 25
Limit: 5
Cell count: 25
											

When to use this

Primary arithmetic practice reads one row at a time, factor lookup scans the square grid, and classroom charts highlight commutative mirror pairs.

Edge cases

• A limit of 20 creates 400 products plus headers, while 21 is rejected by the visible-grid ceiling.
• Zero, negative factors, decimals, and custom start values are outside the fixed 1-to-limit table.
• Products intentionally mirror across the diagonal because 3×4 and 4×3 are equal; those are commutative pairs, not duplicate rows.