Divisibility
Is 62 divisible by 3? Why or why not?
No, because adding up the digits = 8 which is not divisible by 3
Use exponents to write:
3 x 3 x 3 x 3
34
Write the prime factorization of 34
2 x 17
7
16/32
1/2
6
Use exponents to write:
6 x 6 x y
62y
Write the prime factorization of 8
23
3
24xy/28x
6y/7
Is 153 prime or composite? If it is composite what is it divisible by?
composite, divisible by 3 or 9
Solve:
32 + 4 - 2
11
Write the prime factorization of 115
5 x 23
What is the GCF of 5a and 35a
5a
16m3n2/4mn2
4m2
What digit will make the following number divisible by 4?
13_
2 or 6
Solve:
7 + (42 - 1)
22
Write the prime factorization of 621
33 x 23
What is the GCF of 18c3 and 24c
6c
16rt/24r
2t/3
Is 111 divisible by 9? Why or why not?
No, adding up the digits = 3 which is not divisible by 9
What is the difference between (-3)4 and -34
(-3)4 is (-3)x(-3)x(-3)x(-3) and -34 is 3x3x3x3 and then you add the negative onto the answer
Write the prime factorization of 29
What is the GCF of 27x2y and 36x3y and 9xy2
9xy
cb/3cb
1/3