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
Teacher:
Scroll down the
page to find the
link to the interactive, selfchecking pupil version of Pyramid Puzzle.
Topics: Starter  Algebra  Arithmetic  Functions  Number  Problem Solving
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Teacher, do your students have access to computers such as tablets, iPads or Laptops? This page was really designed for projection on a whiteboard but if you really want the students to have access to it here is a concise URL for a version of this page without the comments: Transum.org/go/?Start=January4 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to the student version of this activity.
Here is another activity using the same idea but introducing nagatives and fractions.