Addition pyramids are pyramids of numbers. The bottom row is filled with random numbers. Each number in the upper rows is the sum of the two numbers below it.

When you start with the just bottom row filled in, the student solves the pyramid by adding adjacent numbers, and writing the sum above them, working this way up to the top of the pyramid.

When you start with random circles filled in, the student will use addition, logical deduction and subtraction where necessary to fill in the missing numbers. Larger Pyramids are harder to solve.

3 rows 4 rows 5 rows

Fill in just the bottom row of numbers. Fill in random numbers.

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