Using only these keys on your calculator make each of the target numbers on the balloons. Use the minimum number of key presses.
16
24
97
624
Brilliant Balloon Busting!
Is it possible to do it using fewer than key presses?
0
Topics: Starter  Arithmetic  Calculator  Place Value  Problem Solving
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Note to teacher: Doing this activity once with a class helps students develop strategies. It is only when they do this activity a second time that they will have the opportunity to practise those strategies. That is when the learning is consolidated. Click the button above to regenerate another version of this starter from random numbers.
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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=September28 However it would be better to assign one of the student interactive activities below. 

Here is the URL which will take them to a calculator workout.