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GCF/LCM & Prime/Composite Puzzle

Horizontales
GCF of 12 and 16
Is 51 prime or composite?
How many factors are there for the number 20?
Is 97 prime or composite?
LCM of 18 & 30
I have 60 suckers and 12 cookies. If I give the same amount of suckers and cookies to each of my friends and I have nothing left over. How many friends do I have?
Prime number between 50-59?
GCF of 16 and 32?
GCF of 24 and 16?
How many composite numbers are there between 10-20?
LCM of 3 and 10
Verticales
What next multiple of 20?
Is 138 prime or composite?
I recorded the weather. It rains every 5 days. It thunders every 7 days. How many days until it rains and thunders?
GCF of 20 & 100?
Prime number between 12 and 18
How many factors does 60 have ?
LCM of 30 & 90
A bird chirps every 10 seconds and a dog barks every 3 seconds. How many seconds before they bark and chirp at the same time?
LCM of 15 and 6?