KRYPTO RULES
AND PROCEDURES
Jr High School 2007-2008
Materials: To be supplied by Host Center.
· Pencils
· Index cards to write solutions on
· Scratch paper
· NO OUTSIDE MATERIALS WILL BE ALLOWED IN THE ROOM
· NO MATERIALS WILL BE TAKEN FROM THE ROOM
· NO VIDEO CAMERAS OR ADVISORS/COACHES WILL BE ALLOWED IN THE ROOM
Game Rules and Procedures:
1. The room announcer will announce “go” and five numbers and a target number will be displayed on the screen.
2. A solution occurs when all 5 of the given numbers in any order are used to obtain the target number using the operations of addition, subtraction, multiplication or division in any order, but using the correct orders of operations. Grouping symbols may be used.
3. Students cannot use a given number more times than it occurs in the group of five numbers.
4. When a student has a solution they will write that solution on one of the index cards provided and hand it to the timer. The timer will record the time elapsed before the card was received.
5. When three correct cards have been handed in, the announcer will call “stop” and that round will end.
6. The solution written on the card will be entered into the calculator exactly as it is written. If the calculator gives the correct target number, the card will be given a score. If the calculator gives a number other than the target number, no points will be scored for that card.
7. One solution will be written on each card. Duplicate solutions from the same team will result in only one score for the round for the team.
8. Points will be awarded for each correct non-duplicated solution.
9. School and round number must be written on each solution card.
10. Solutions will be checked using a graphing calculator by entering the solution into the calculator exactly as it is written.
11. Solutions must be unique. Example: 3(4 + 5) + 12 = 39 is the same as 12 + 3(4 + 5) = 39 and is therefore NOT unique. Only one of these solutions counts.
12. Solutions that do not give the correct target number, or are duplicates will be discarded. Solutions that are arrived at after the announcer calls “stop” will not be scored.
Winners:
The winners will be able to choose a prize from the prize table.
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