Highest common factor and Lowest common multiple

A prime number...

• has one factor.
• has more than 2 factors.
• has 100 factors.
• has exactly 2 factors: 1 and the itself.

Tags

CCSS.4.OA.B.4

Composite numbers:

• Are always bigger than prime numbers
• Have more than 2 factors
• Have 2 pairs of factors
• Don't have factors

Tags

CCSS.4.OA.B.4

Using a Factor Tree, find the prime factorization of 150.

• 2³ x 3 x 5

• 2 x 5²

• 2 x 3 x 5²

• 5² x 6

Tags

CCSS.6.EE.A.1

What is the Lowest Common Multiple of 4 and 14

• 28

• 42

• 56

• 24

What is the HCF of 8 and 24?

• 1

• 24

• 8

• 4

What is the Highest Common Factor of 35 and 49

• 5

• 7

• 1

• 17

What is the highest common factor of 24, 60, and 108?

(a)  

What is the lowest common multiple of 32, 45, and 70?

(a)  

Adam is trying to find the greatest number of gift bags he can give to his friends. He wants the same amount of toy dinosaurs and stickers in each bag. If he has 30 toy dinosaurs and 20 stickers, what does he need to find? How many dinosaurs and stickers will be in each bag?

• Highest Common Multiple; 3 dinosaurs and 2 stickers

• Highest Common Factor; 3 dinosaurs and 2 stickers

• Highest Common Factor; 6 dinosaurs and 4 stickers

• Lowest Common Multiple; 60 dinosaurs and 60 stickers

An electronic device rings every 25 minutes. It flashes every 1 hour. The last time it flashed and rang at the same time was 9 am. When will the device ring and flash at the same time again?

(a)