100
× 4
× 1.2
× 1
× 3
× 1.2
× 0.1
× 1
× 5
× 0.8
× 0.4
× 0.1
× 0.7
× 1.5
× 2
× 4
× 0.8
Beginning at the "Start" with 100 on your calculator. What is the largest and smallest total you can end up with at the "Finish" . You can only travel in the direction of the arrows.
Teacher: Click the operation buttons to show possible routes.
Topics: Starter  Calculator  Decimals
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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=December7 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a related student activity.