Put the numbers 1 to 5 in the bottom row of this pyramid. They can be arranged in any order. The numbers in the other bricks are found by adding the two bricks immediately below together. What arrangement of the numbers in the bottom row gives the largest total in the top brick of the pyramid?
What arrangement gives the
smallest total in the top brick
of the pyramid?
A pyramid puzzle worksheet is available here
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link to the interactive, self-checking pupil version of Pyramid Puzzle.
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Here is another activity using the same idea but introducing nagatives and fractions.