Addition facts are easier when you know the patterns! With this worksheet, your third graders will investigate patterns on the addition table.

Find the mathematical rule in these math tables. Compare the input and output numbers to find the hidden pattern in each table.

Use a little bit of logic to find out the rule that links "input" and "output" in these math puzzles.

Compare your "input" number to the corresponding "output" number to find the pattern in each table and fill in the missing numbers.