Factors and Multiples
What is the LCM of 6 and 12?
The LCM is 12
What two numbers must be factors of a number for 6 to also be a factor?
2 and 3
643 x 8 =
5,144
2,025 ÷ 9
225
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, and 60.
Is 34,989 divisible by 2?
No, because it is not even.
9,243 x 7 =
64,701
3,284 ÷ 8
410 r4
What is the GCF of 42 and 48?
6
What number's divisibility rule is the number must end in 0.
10
9,845 x 4 =
39,380
1,610 ÷ 7
230
List all the factors of 42
1,2,3,6,7,14,21, and 42
Yes, because the number ends in 5.
87 x 68 =
5,916
2,072 ÷ 6
345 r2
What is the LCM of 6,3,9?
The LCM is 18
Is 245 divisible by 3?
No because 2+4+5=11, and 11 is not divisible by 3.
54 x 27 =
1,458
4967 ÷ 3
1,655 r 2