Prime Factors
Express 45 as a product of its prime factors.
45= 3 x 3 x 5
Find the common factors of each pair of numbers.
18 and 50
1 and 2
Find the GCF.
42 and 54
GCF=6
Find the LCM.
8 and 12
LCM=24
Find the square and cube of 7.
72 = 49
73 = 343
Express 54 as a product of its prime factors.
54 = 2 x 3 x 3 x 3
Find the first 3 common multiples of each pair of numbers.
9 and 21
63, 126, and 189
Find the GCF.
49 and 70
GCF=7
Find the LCM.
18 and 30
LCM=90
Find the square of 23.
529
750 is 2 x 3 x 5 x 5 x 5 when written as a product of its prime factors. Write 3,000 as a product of its prime factors.
3,000 = 4 x 750
= 4 x 2 x 3 x 5 x 5 x 5
= 2 x 2 x 2 x 3 x 5 x 5 x 5
Find the common factors of each pair of numbers.
36 and 90
1, 2, 3, 6, 9, and 18
Find the GCF.
12, 48, and 60
GCF=12
Find the LCM.
12 and 20
LCM=60
Find the value of the expression.
32 + 73 + 43
416
63,000 can be expressed in terms of its prime factors as 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 7. Write 6,300 as a product of its prime factors.
63,000 = 2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 7
6,300 = 63,000 / 10
2 x 2 x 2 x 3 x 3 x 5 x 5 x 5 x 7 / 2 x 5
= 2 x 2 x 3 x 3 x 5 x 5 x 7
Find the first 3 common multiples of each pair of numbers.
12 and 18
36, 72, 108
Find the GCF.
14, 28, and 49
GCF=7
Find the LCM.
14, 28, and 49
LCM=196
Find the value of the expression.
53 x 22 - 43
436