This is level 1: pick prime numbers in the range 1 to 16.
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Your job is to pick the
prime numbered fruit from
the tree by clicking on them
as quickly as possible.
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StartAll the prime numbers have not been picked yet. Keep trying.
You have tried to pick a numbered fruit that is not prime.
Try to remember that is not prime.
Try Again
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www.Transum.org/go/?Num=791
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Level 1 - Pick prime numbers in the range 1 to 16
Level 2 - Pick prime numbers in the range 17 to 37
Level 3 - Pick prime numbers in the range 38 to 61
Level 4 - Pick prime numbers in the range 62 to 99
Level 5 - Identify numbers as being either prime or composite up to 144
More on this topic including lesson Starters, visual aids, investigations and self-marking exercises.
Answers to this exercise are available lower down this page when you are logged in to your Transum account. If you don’t yet have a Transum subscription one can be very quickly set up if you are a teacher, tutor or parent.
Currently the fastest time in the last month for this level (Level 1) has been achieved by R Brooks with a time of 0:03 (that is 3 seconds) on Friday, November 8, 2024. Can you beat that? If you can make sure you claim a trophy because that is how fast times are officially recognised.
R Brooks
0:03
Chris Smith @aap03102 Twitter,
Monday, September 16, 2019
"You’ve met the first six primes:
2,3,5,7,13,11
They form a nice calculation:
23x57=1311."
Stephanie Cardillo, Campbelltown PS
Thursday, November 28, 2019
""
Crosthwaite School, Twitter
Tuesday, November 29, 2022