Exploring Illustrative Mathematics Grade 6 Unit 7 Lesson 18

This video tutorial covers Math 6 Unit 7 Lesson 18, focusing on using common multiples and factors. It includes activities like a rhythm game, solving problems with cups and plates, tiling a bathroom floor, placing stickers on lockers, and assembling first aid kits. The lesson concludes with homework and mental math exercises, emphasizing the application of least common multiples and greatest common factors.

What is the main purpose of the rhythm game introduced in the lesson?

• To practice clapping in rhythm

• To understand common multiples and factors

• To improve listening skills

• To learn about musical instruments

If cups are sold in packs of 8 and plates in packs of 6, what is the smallest number of cups and plates Elena can buy to have the same number of each?

• 12

• 72

• 48

• 24

How many packs of cups and plates does Elena need to buy to have 24 of each?

• 2 packs of cups and 3 packs of plates

• 3 packs of cups and 3 packs of plates

• 4 packs of cups and 3 packs of plates

• 3 packs of cups and 4 packs of plates

What are the common factors of 24 and 18?

• 1, 3, 6, 9

• 2, 3, 4, 6

• 1, 2, 4, 6

• 1, 2, 3, 6

What is the largest tile size that can be used to cover a 24 by 18 bathroom floor without cutting any tiles?

• 12 inches

• 8 inches

• 6 inches

• 4 inches

Which lockers will get both skateboard and kite stickers if skateboard stickers are placed every 4th locker and kite stickers every 5th locker?

• 15, 30, 45

• 25, 50, 75

• 10, 20, 30

• 20, 40, 60

How many bandages and lozenges will each first aid kit contain if the largest common factor is used?

• 10 bandages and 12 lozenges

• 5 bandages and 6 lozenges

• 20 bandages and 24 lozenges

• 15 bandages and 18 lozenges

What mathematical concept was used to determine the number of tiles needed for the bathroom floor?

• Least common multiple

• Greatest common factor

• Prime factorization

• Addition

What is the least common multiple of 12 and 8?

• 12

• 16

• 32

• 24

What is the product of the greatest common factor and the least common multiple of 12 and 8?

• 96

• 72

• 48

• 120