Factors/Multiples/Divisibility
Tell whether each number is divisible by 2,3,4,5,6,9, or 10.
1. 27
2. 86
What is.....
1. 3,9
2. 2
Write the prime factorization of 24.
What is...
23 x 3
What is the GCF of 20 and 24?
What is 4.
Write 2 fractions that are equivalent to 8/32.
What is...
2/8 and 1/4
What are 5 multiples of the number 6?
What is....
6,12,18,24,30,36,42,48,54.....
Tell whether each number is divisible by 2,3,4,5,6,9, or 10.
1. 348
2. 954
What is...
1. 2,3,4,6
2. 2,3,6,9
Write the prime factorization of 51.
What is...
3 x 17
What is the GCF of 24 and 100?
What is 4.
Write 2 fractions that are equivalent to 7/12.
What is...
14/24 and 21/36
Test the conjecture:
Composite numbers have an even number of factors.
Is this correct or incorrect?
What is...
Incorrect. Example: 4 has three factors. 1,2,4.
Is 76 a multiple of 2? Why or why not?
Yes because 76 / 2 = 38 or 38 x 2 = 76
76 is DIVISIBLE by 2!!
Write the prime factorization of 270.
What is...
2 x 33 x 5
What is the GCF of 21 and 84.
What is 21.
Use equivalent fractions to show that 43/200 is between 1/5 and 1/4.
What is...
1/5= 40/200
1/4= 50/200
43/200 is in between the two when we find equivalent fractions.
A positive integer greater than 1. It has exactly 2 factors, 1 and itself.
What is a prime number?
Is 535 a multiple of 3? Why or why not?
No. 535 is not divisible by 3. The last digit in 535 is 5.
Write the prime factorization of 43.
What is...
1 x 43
43 is a PRIME NUMBER.
Draw a number line to represent 7/12.
What is....
Write the fraction 75/165 in simplest form.
What is 5/11.
Writing a number as a product of its prime factors.
What is prime factorization.
Name 3 numbers that are factors of both 15 and 30.
Is the number 1 prime or composite?
What is NEITHER!
Draw a number line to represent 5/8.
What is....
Write the fraction 30/108 in simplest form.
What is 5/18.
The largest number 2 or more numbers have in common.
What is greatest common factor.