Cat 1- Divisibility Rules
True or false: 10 is divisible by 2.
True
List 2 factors of the number 10.
Possible answers. 1, 2, 5, 10.
Is 15 prime, composite, or neither?
Composite
Write 33 as a multiplication sentence (expanded form).
3*3*3
What operation is solved first?
81÷(11-4) + 42
Subtraction because its in grouping symbols.
What is 15 divisible by? 2,3,5,10?
3,5
List 3 multiples of 20.
Possible answers. 20, 40, 60, 80, 100.....
Is 1 prime, composite, or neither?
Neither
Write the exponent form of 4*4*4*4*4
45
(17 - 10) + 32
16
What is 20 divisible by?
2, 3, 5, 10?
2, 5, 10
True or false: 6 is a factor of 24.
True!
22*7 is the prime factorization of what number?
What is 38?
Find the value of 62
36
3(27÷9+5)
24
Which number is divisible by both 3 and 5?
a. 102
b. 40
c. 45
c. 45
True or false: 32 is a factor of 8.
False- it is a multiple.
Find the prime factorization of 80. Use exponents as necessary.
24*5
Find the value of 33.
What is 27?
(2+1)2+(15-5)
19
What is 144 divisible by?
2,3,5, 10?
2, 3
Which of the following is NOT true? (answer may contain more than one letter)
a. 20 is a factor of 5.
b. 5 is a factor of 20.
c. 20 is divisible by 5.
d. 5 is a multiple of 20.
a and d.
Find the prime factorization of 150. Use exponents as necessary.
2*3*52
Write the exponent form of 8.
23
52+36÷(3×4)-8
20