Real Numbers

What is the greatest factor of 28 and 49?

• 1
• 2
• 7
• 12

Tags

CCSS.6.NS.B.4

What is the GCF of 72, 96, and 84?

• 2
• 7
• 12
• 4

Tags

CCSS.6.NS.B.4

What is the GCF of { 204 , 272 , 374 }

• 2

• 7

• 34

• 4

gcd(144,405)

One owl hoots every 3 hours, a second owl hoots every 8 hours, and a third owl hoots every 12 hours. If they all hoot together at the start, how many times during the next 80 hours will just two of the owls hoot together?

• 2

• 3

• 4

• 6

What is the GCF of 18 and 24?

• 3
• 6
• 8
• 9

Tags

CCSS.6.NS.B.4

Two neon signs are turned on at the same time. Both signs blink as they are turned on. One sign blinks every 9 seconds. The other sign blinks every 15 seconds. In how many seconds will they blink together again?

• 48 seconds
• 45 seconds
• 16 seconds
• 8 seconds

Tags

CCSS.6.NS.B.4

Find LCM of 2a and 3a²

• 6a

• 6a²

Find HCF of 2ab² and 6ab

• 2ab
• 6ab

Find HCF of 12a⁵, 6a³, and 36a⁴

• 36a⁵

• 36a³

• 6a⁵

• 6a³