Math Prime Numbers
posted by Elena .
Grade 7 question:
I am a twodigit prime number
I am one less than a multiple of 10
If you add 30 to me you get another prime number
Who am I _________?

Math Prime Numbers 
bobpursley
you can try 19, 29, 59, 79, 89. That will start you. On your own, figure out why I selected those.

Math Prime Numbers 
Elena
Thank You !

Math Prime Numbers 
ryan dale
they all end in 9 and are all multiples of a number:P ahahaah

atubrk tbif 
atubrk tbif
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