GCF and LCM
What is the GCF of 5 and 10?
5
What is 22 * 23? Make sure to simplify.
25 = 32
What is 456123000 in scientific notation?
4.56123 * 108
What is √25 ?
5
What is 4√81
3
What is the LCM of 10 and 20?
20
What is (32)2?
34 = 81
Write 3678000000000000 in scientific notation.
3.678 * 1015
What is ∛8 ?
2
What is 2(22 * 21) / 3(32 * 31)
2(22 * 21) = 2 * 8 = 16
3(32 * 31) = 3 * 27 = 81
= 16/81
What is the LCM of 14 and 15?
210
What is 48 / 45?
43 = 64
What is (5.1 * 1012) * (6.2 * 1011) in scientific notation?
(5.1 * 1012) * (6.2 * 1011) = 31.62 * 1023
= 3.162 * 1024
Write the following in radical form: 57/8
8√57
If the mass of a lion is 250 kg and the mass of the sun is about 2 * 1030, how many lions would fit in the sun? Write your answer in scientific notation.
2 * 1030 / 2.5 * 102 = 0.8 * 1028
= 8 * 1027
What is the GCF of 234 and 123?
3
What is 1001/2?
10
What is 3 * 10506 / 9 * 10501 in scientific notation?
1/3 * 105 = about 3.3 x 104
or
105/3
Write the following radical in exponential form:
12√515
Remember to simplify
12√515 = 512/15
= 54/5
If you multiplied the GCF of 10 and 20 by 3, how much greater would it be than the LCM of 7 and 14.
The GCF of 10 and 20 is 10. 10 * 3 = 30
The LCM of 7 and 14 is 28.
30 - 28
=2
If you multiplied the GCF of 35 and 49 by 40, would it be greater than the LCM of 21 and 45?
No, the GCF of 35 and 49 is 7. 7 * 40 = 280.
The LCM of 21 and 45 is 315.
315 > 280
What is 4(22 * 23) + (34 + 32 + 1001/2)1/2?
4(22 * 23) = 4 * 25 = 4 * 32 = 128
(34 + 32 + 1001/2)1/2 = (81 + 9 + 10)1/2 = 1001/2
= 10
128 + 10
= 138
Solve this equation and then write it in scientific notation:
[(3.72 * 102) * (2 * 104)] / [(3 * 105) * (2.48 * 10)]
(3.72 * 102) * (2 * 104) = 7.44 * 106
(3 * 105) * (2.48 * 10) = 7.44 * 106
7.44 * 106 / 7.44 * 106
= 1
Solve this exponential equation and put it into radical form:
(53 / 53/4)2
(53 / 53/4)2 = (59/4)2 = 518/4
518/4 = 4√518 = 54 4√52 = 625√5
Solve this radical equation:
(√163 / √46) * (√100 * √25)
(√163 / √46) = √163 / √163 = 1
(√100 * √25) = 10 * 5
= 50