Team 1
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Team 2
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Teams
Name
Score
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15
×
Is 13 a prime? Why?
Yes, 13 is a prime since it only has two factors: 1 and itself.
Oops!
Check
Okay!
Check
15
×
Is 38 a prime number? Why
No, 38 is a composite number as 38 is an even number, so besides 1 and itself, 2 is also one of its factors.
Oops!
Check
Okay!
Check
×
heart
Other team wins 20 points!
Oops!
×
shark
Other team loses 10 points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
baam
Lose 25 points!
Oops!
20
×
Is 43 a prime number? Why?
Yes, 43 is a prime number as it only has two factors: 1 and itself.
Oops!
Check
Okay!
Check
15
×
Is 17 a prime? Why?
Yes, 17 is a prime since it only has two factors: 1 and itself.
Oops!
Check
Okay!
Check
×
thief
Give points!
5
10
15
20
25
×
shark
Other team loses 25 points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
lifesaver
Give 25 points!
Oops!
25
×
Are all prime odd numbers?
No, 2 is the only even prime number.
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Check
Okay!
Check
15
×
Is 18 a prime number? Why?
No, 18 is a composite number since besides 1 and itself, 2 is also one of its factors.
Oops!
Check
Okay!
Check
15
×
Is 21 a prime number? Why?
No, 21 is a composite number since besides 1 and itself, 3 is also one if its factors.
Oops!
Check
Okay!
Check
20
×
Is 45 a prime number? Why?
No, 45 is a composite number as besides 1 and itself, 5 is also one of its factors.
Oops!
Check
Okay!
Check
15
×
Is 15 a prime? Why?
No, 15 is a composite number since besides 1 and itself, 3 is also one of its factors.
Oops!
Check
Okay!
Check
×
eraser
Reset score!
Oops!
×
magnet
Take 10 points!
Okay!
×
fairy
Take points!
5
10
15
20
25
×
thief
Give points!
5
10
15
20
25
×
banana
Go to last place!
Oops!
×
gold
Win 50 points!
Okay!
×
gift
Win 25 points!
Okay!
×
thief
Give points!
5
10
15
20
25
20
×
Is 1 a prime number? Why?
1 is NOT a prime number since it only has one factor: itself!
Oops!
Check
Okay!
Check
×
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