Divisibility and Factors
List the factors of 30
1, 2, 3, 5, 6, 10, 15, 30
List the prime factorization of 24.
2x2x2x3 OR 23x3
Find the GCF of 24 and 36.
12
What is the area of a square with side lengths of 12 cm?
144 square centimeters
List the factors of 48.
1, 2, 3, 4, 6, 8, 12, 16, 24, 48
List the prime factorization of 36.
2x2x3x3 OR 22x32
Find the LCM of 8 and 12.
24
Evaluate:
20 - 16 ÷ 2
12
Is 80 a perfect square?
No
List the prime factorization of 19.
19
(19 is prime)
How is LCM used with fractions?
It is used to find a common denominator when adding or subtracting fractions. LCM of the denominators is the least common denominator.
Evaluate:
8 x 3 + 3 x 5
39
Is 3 a factor of 12,196?
No
The prime factorization of a number is:
2^3xx3xx5
What is the original number?
120
A red light blinks every 6 seconds. A blue light blinks every 8 seconds. Both lights just blinked. In how many seconds will they blink at the same time again?
24 seconds
Evaluate:
23 + 3 ( 4 - 2 )2 + 10
30
23 + 3 ( 4 - 2 )2 + 10
23 + 3 (2)2 + 10
8 + 3(4) + 10
8 + 12 + 10
20 + 10
30
List the factors of 56.
1, 2, 4, 7, 8, 14, 28, 56
List the prime factorization of 96.
2x2x2x2x2x3 OR 25x3
You have 28 red roses and 42 pink roses. What is the largest number of identical arrangements you can make using all the roses? How many red and pink roses are in each arrangement?
14 arrangements with 2 red and 3 pink in each one.
Evaluate:
(4^2-3(2))/(24÷4(3))
5 / 9
[ 42 - 3 ( 2 ) ] / { 24 / 4 ( 3) }
[ 16 - 3 ( 2 ) ] / { 24 / 4 ( 3) }
[ 16 - 6 ] / { 24 / 4 ( 3) }
[ 10 ] / { 24 / 4 ( 3) }
[ 10 ] / { 6 ( 3) }
[ 10 ] / { 18 }
5 / 9