What goes in, what comes out
A rule, a column of numbers and a column to fill — the first algebra, before anyone calls it that.
Use the rule on every number.
An input-output table generator, printable as a PDF. Six tables a page, three to a row, each with a rule over an arrow — +3, −12, ×4, ×2 +1. The three tables in a row share their numbers, and when adding or subtracting the rules are often related — +3, +13, +30 — so the row teaches place value too. Fill in the outputs, work backwards to the inputs, or find the rule from a few given pairs and finish the table. Rules go from adding within 20 to two-step rules within 1,000.
1 token a sheet, fewer in batches.
US Letter PDF — prints on any home printer.
Read
Read the rule at the top of the table.
Apply
Use it on each number on the left.
Write
Write the answer in the box beside it.
Activity
Rules
Often three related rules on the same numbers — +3, +13, +30.
Numbers up to
Rows in a table
Your worksheet lands here — download, print, or email it.