Puzzle
NumberPuzzle
Code breaker:Bounds
Thirteen bounds to find: single rounded values first, then totals, differences, areas, speeds and the most crates a van can safely carry. The Code Box includes the answers you get by taking lower from lower in a difference or dividing by the wrong bound. One per A4.
A free GCSE number puzzle with answers, spec code N16. It goes with the lessons on bounds in calculations and limits of accuracy.
Lesson
Bounds in calculations
Lesson
Limits of accuracy
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